diff --git a/fe/fe-core/src/main/cup/sql_parser.cup b/fe/fe-core/src/main/cup/sql_parser.cup
index 1cdedf23952df7..c01be1200ddb20 100644
--- a/fe/fe-core/src/main/cup/sql_parser.cup
+++ b/fe/fe-core/src/main/cup/sql_parser.cup
@@ -1389,6 +1389,10 @@ alter_stmt ::=
     {:
         RESULT = new AlterUserStmt(ifExists, user, null, passwdOptions);
     :}
+    | KW_ALTER KW_REPOSITORY ident:repoName opt_properties:properties
+    {:
+        RESULT = new AlterRepositoryStmt(repoName, properties);
+    :}
     ;
 
 opt_datasource_properties ::=
diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/AlterRepositoryStmt.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/AlterRepositoryStmt.java
new file mode 100644
index 00000000000000..b0ecd6d3bd4b76
--- /dev/null
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/AlterRepositoryStmt.java
@@ -0,0 +1,86 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.analysis;
+
+import org.apache.doris.catalog.Env;
+import org.apache.doris.common.ErrorCode;
+import org.apache.doris.common.ErrorReport;
+import org.apache.doris.common.FeNameFormat;
+import org.apache.doris.common.UserException;
+import org.apache.doris.common.util.PrintableMap;
+import org.apache.doris.datasource.property.constants.S3Properties;
+import org.apache.doris.mysql.privilege.PrivPredicate;
+import org.apache.doris.qe.ConnectContext;
+
+import com.google.common.collect.Maps;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class AlterRepositoryStmt extends DdlStmt {
+    private String name;
+    private Map<String, String> properties;
+
+    public AlterRepositoryStmt(String name, Map<String, String> properties) {
+        this.name = name;
+        this.properties = properties;
+        if (this.properties == null) {
+            this.properties = Maps.newHashMap();
+        }
+    }
+
+    public Map<String, String> getProperties() {
+        return properties;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public void analyze(Analyzer analyzer) throws UserException {
+        super.analyze(analyzer);
+        // check auth
+        if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), PrivPredicate.ADMIN)) {
+            ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "ADMIN");
+        }
+        FeNameFormat.checkCommonName("repository", name);
+        Map<String, String> copyProperties = new HashMap<>(properties);
+        if (copyProperties.size() == 0) {
+            throw new UserException("alter repository need contains ak/sk/token info of s3.");
+        }
+        copyProperties.remove(S3Properties.ACCESS_KEY);
+        copyProperties.remove(S3Properties.SECRET_KEY);
+        copyProperties.remove(S3Properties.SESSION_TOKEN);
+        copyProperties.remove(S3Properties.Env.ACCESS_KEY);
+        copyProperties.remove(S3Properties.Env.SECRET_KEY);
+        copyProperties.remove(S3Properties.Env.TOKEN);
+        if (copyProperties.size() != 0) {
+            throw new UserException("alter repository only support ak/sk/token info of s3."
+                + " unsupported properties: " + copyProperties.keySet());
+        }
+    }
+
+    @Override
+    public String toSql() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("ALTER REPOSITORY '").append(name).append("' ");
+        sb.append("PROPERTIES(").append(new PrintableMap<>(properties, " = ", true, false)).append(")");
+        return sb.toString();
+    }
+}
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java b/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java
index d2f1dd11979186..0df9155ab34e87 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java
@@ -155,6 +155,8 @@ public void setTypeRead(boolean isTypeRead) {
 
     public abstract boolean isCancelled();
 
+    public abstract Status updateRepo(Repository repo);
+
     public static AbstractJob read(DataInput in) throws IOException {
         AbstractJob job = null;
         JobType type = JobType.valueOf(Text.readString(in));
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/BackupHandler.java b/fe/fe-core/src/main/java/org/apache/doris/backup/BackupHandler.java
index 5279175fa00ec7..7c0485228f7f02 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/BackupHandler.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/BackupHandler.java
@@ -19,6 +19,7 @@
 
 import org.apache.doris.analysis.AbstractBackupStmt;
 import org.apache.doris.analysis.AbstractBackupTableRefClause;
+import org.apache.doris.analysis.AlterRepositoryStmt;
 import org.apache.doris.analysis.BackupStmt;
 import org.apache.doris.analysis.BackupStmt.BackupType;
 import org.apache.doris.analysis.CancelBackupStmt;
@@ -49,6 +50,7 @@
 import org.apache.doris.common.util.TimeUtils;
 import org.apache.doris.fs.FileSystemFactory;
 import org.apache.doris.fs.remote.RemoteFileSystem;
+import org.apache.doris.fs.remote.S3FileSystem;
 import org.apache.doris.task.DirMoveTask;
 import org.apache.doris.task.DownloadTask;
 import org.apache.doris.task.SnapshotTask;
@@ -222,6 +224,49 @@ public void createRepository(CreateRepositoryStmt stmt) throws DdlException {
         }
     }
 
+    public void alterRepository(AlterRepositoryStmt stmt) throws DdlException {
+        tryLock();
+        try {
+            Repository repo = repoMgr.getRepo(stmt.getName());
+            if (repo == null) {
+                ErrorReport.reportDdlException(ErrorCode.ERR_COMMON_ERROR, "Repository does not exist");
+            }
+
+            if (repo.getRemoteFileSystem() instanceof S3FileSystem) {
+                Map<String, String> oldProperties = new HashMap<>(stmt.getProperties());
+                Status status = repo.alterRepositoryS3Properties(oldProperties);
+                if (!status.ok()) {
+                    ErrorReport.reportDdlException(ErrorCode.ERR_COMMON_ERROR, status.getErrMsg());
+                }
+                RemoteFileSystem fileSystem = FileSystemFactory.get(repo.getRemoteFileSystem().getName(),
+                        StorageBackend.StorageType.S3, oldProperties);
+                Repository newRepo = new Repository(repo.getId(), repo.getName(), repo.isReadOnly(),
+                        repo.getLocation(), fileSystem);
+                if (!newRepo.ping()) {
+                    LOG.warn("Failed to connect repository {}. msg: {}", repo.getName(), repo.getErrorMsg());
+                    ErrorReport.reportDdlException(ErrorCode.ERR_COMMON_ERROR,
+                            "Repo can not ping with new s3 properties");
+                }
+
+                Status st = repoMgr.alterRepo(newRepo, false /* not replay */);
+                if (!st.ok()) {
+                    ErrorReport.reportDdlException(ErrorCode.ERR_COMMON_ERROR,
+                            "Failed to alter repository: " + st.getErrMsg());
+                }
+                for (AbstractJob job : getAllCurrentJobs()) {
+                    if (!job.isDone() && job.getRepoId() == repo.getId()) {
+                        job.updateRepo(newRepo);
+                    }
+                }
+            } else {
+                ErrorReport.reportDdlException(ErrorCode.ERR_COMMON_ERROR,
+                                                "Only support alter s3 repository");
+            }
+        } finally {
+            seqlock.unlock();
+        }
+    }
+
     // handle drop repository stmt
     public void dropRepository(DropRepositoryStmt stmt) throws DdlException {
         tryLock();
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/BackupJob.java b/fe/fe-core/src/main/java/org/apache/doris/backup/BackupJob.java
index a91c2e12a5183b..ef77d042390d34 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/BackupJob.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/BackupJob.java
@@ -272,6 +272,28 @@ public boolean isCancelled() {
         return state == BackupJobState.CANCELLED;
     }
 
+    @Override
+    public synchronized Status updateRepo(Repository repo) {
+        this.repo = repo;
+
+        if (this.state == BackupJobState.UPLOADING) {
+            for (Map.Entry<Long, Long> entry : unfinishedTaskIds.entrySet()) {
+                long signature = entry.getKey();
+                long beId = entry.getValue();
+                AgentTask task = AgentTaskQueue.getTask(beId, TTaskType.UPLOAD, signature);
+                if (task == null || task.getTaskType() != TTaskType.UPLOAD) {
+                    continue;
+                }
+                ((UploadTask) task).updateBrokerProperties(
+                                S3ClientBEProperties.getBeFSProperties(repo.getRemoteFileSystem().getProperties()));
+                AgentTaskQueue.updateTask(beId, TTaskType.UPLOAD, signature, task);
+            }
+            LOG.info("finished to update upload job properties. {}", this);
+        }
+        LOG.info("finished to update repo of job. {}", this);
+        return Status.OK;
+    }
+
     // Polling the job state and do the right things.
     @Override
     public synchronized void run() {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/Repository.java b/fe/fe-core/src/main/java/org/apache/doris/backup/Repository.java
index a236ba3c30865f..251cb24efae746 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/Repository.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/Repository.java
@@ -29,6 +29,7 @@
 import org.apache.doris.common.io.Writable;
 import org.apache.doris.common.util.PrintableMap;
 import org.apache.doris.common.util.TimeUtils;
+import org.apache.doris.datasource.property.constants.S3Properties;
 import org.apache.doris.fs.PersistentFileSystem;
 import org.apache.doris.fs.remote.BrokerFileSystem;
 import org.apache.doris.fs.remote.RemoteFile;
@@ -58,7 +59,10 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Paths;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 import java.util.UUID;
 
 /*
@@ -290,6 +294,37 @@ public Status initRepository() {
         }
     }
 
+    public Status alterRepositoryS3Properties(Map<String, String> properties) {
+        if (fileSystem instanceof S3FileSystem) {
+            Map<String, String> oldProperties = new HashMap<>(this.getRemoteFileSystem().getProperties());
+            oldProperties.remove(S3Properties.ACCESS_KEY);
+            oldProperties.remove(S3Properties.SECRET_KEY);
+            oldProperties.remove(S3Properties.SESSION_TOKEN);
+            oldProperties.remove(S3Properties.Env.ACCESS_KEY);
+            oldProperties.remove(S3Properties.Env.SECRET_KEY);
+            oldProperties.remove(S3Properties.Env.TOKEN);
+            for (Map.Entry<String, String> entry : properties.entrySet()) {
+                if (Objects.equals(entry.getKey(), S3Properties.ACCESS_KEY)
+                        || Objects.equals(entry.getKey(), S3Properties.Env.ACCESS_KEY)) {
+                    oldProperties.putIfAbsent(S3Properties.ACCESS_KEY, entry.getValue());
+                }
+                if (Objects.equals(entry.getKey(), S3Properties.SECRET_KEY)
+                        || Objects.equals(entry.getKey(), S3Properties.Env.SECRET_KEY)) {
+                    oldProperties.putIfAbsent(S3Properties.SECRET_KEY, entry.getValue());
+                }
+                if (Objects.equals(entry.getKey(), S3Properties.SESSION_TOKEN)
+                        || Objects.equals(entry.getKey(), S3Properties.Env.TOKEN)) {
+                    oldProperties.putIfAbsent(S3Properties.SESSION_TOKEN, entry.getValue());
+                }
+            }
+            properties.clear();
+            properties.putAll(oldProperties);
+            return Status.OK;
+        } else {
+            return new Status(ErrCode.COMMON_ERROR, "Only support alter s3 repository");
+        }
+    }
+
     // eg: location/__palo_repository_repo_name/__repo_info
     public String assembleRepoInfoFilePath() {
         return Joiner.on(PATH_DELIMITER).join(location,
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/RepositoryMgr.java b/fe/fe-core/src/main/java/org/apache/doris/backup/RepositoryMgr.java
index 3866c55331c414..e923ba4e0441aa 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/RepositoryMgr.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/RepositoryMgr.java
@@ -21,6 +21,7 @@
 import org.apache.doris.catalog.Env;
 import org.apache.doris.common.io.Writable;
 import org.apache.doris.common.util.Daemon;
+import org.apache.doris.fs.remote.S3FileSystem;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
@@ -96,6 +97,31 @@ public Repository getRepo(long repoId) {
         return repoIdMap.get(repoId);
     }
 
+    public Status alterRepo(Repository newRepo, boolean isReplay) {
+        lock.lock();
+        try {
+            Repository repo = repoNameMap.get(newRepo.getName());
+            if (repo != null) {
+                if (repo.getRemoteFileSystem() instanceof S3FileSystem) {
+                    repoNameMap.put(repo.getName(), newRepo);
+                    repoIdMap.put(repo.getId(), newRepo);
+
+                    if (!isReplay) {
+                        // log
+                        Env.getCurrentEnv().getEditLog().logAlterRepository(newRepo);
+                    }
+                    LOG.info("successfully alter repo {}, isReplay {}", newRepo.getName(), isReplay);
+                    return Status.OK;
+                } else {
+                    return new Status(ErrCode.COMMON_ERROR, "Only support alter s3 repository");
+                }
+            }
+            return new Status(ErrCode.NOT_FOUND, "repository does not exist");
+        } finally {
+            lock.unlock();
+        }
+    }
+
     public Status removeRepo(String repoName, boolean isReplay) {
         lock.lock();
         try {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java b/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java
index a69189ba10a758..e69bab67cb5587 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java
@@ -337,6 +337,28 @@ public boolean isCancelled() {
         return state == RestoreJobState.CANCELLED;
     }
 
+    @Override
+    public synchronized Status updateRepo(Repository repo) {
+        this.repo = repo;
+
+        if (this.state == RestoreJobState.DOWNLOADING) {
+            for (Map.Entry<Long, Long> entry : unfinishedSignatureToId.entrySet()) {
+                long signature = entry.getKey();
+                long beId = entry.getValue();
+                AgentTask task = AgentTaskQueue.getTask(beId, TTaskType.DOWNLOAD, signature);
+                if (task == null || task.getTaskType() != TTaskType.DOWNLOAD) {
+                    continue;
+                }
+                ((DownloadTask) task).updateBrokerProperties(
+                        S3ClientBEProperties.getBeFSProperties(repo.getRemoteFileSystem().getProperties()));
+                AgentTaskQueue.updateTask(beId, TTaskType.DOWNLOAD, signature, task);
+            }
+            LOG.info("finished to update download job properties. {}", this);
+        }
+        LOG.info("finished to update repo of job. {}", this);
+        return Status.OK;
+    }
+
     @Override
     public void run() {
         if (state == RestoreJobState.FINISHED || state == RestoreJobState.CANCELLED) {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/journal/JournalEntity.java b/fe/fe-core/src/main/java/org/apache/doris/journal/JournalEntity.java
index b0749db1fe14ea..b47dd090f4c921 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/journal/JournalEntity.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/journal/JournalEntity.java
@@ -876,6 +876,11 @@ public void readFields(DataInput in) throws IOException {
                 isRead = true;
                 break;
             }
+            case OperationType.OP_ALTER_REPOSITORY: {
+                data = Repository.read(in);
+                isRead = true;
+                break;
+            }
             default: {
                 IOException e = new IOException();
                 LOG.error("UNKNOWN Operation Type {}", opCode, e);
diff --git a/fe/fe-core/src/main/java/org/apache/doris/persist/EditLog.java b/fe/fe-core/src/main/java/org/apache/doris/persist/EditLog.java
index c5da3e600e5e08..98d2c1ff0a3d91 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/persist/EditLog.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/persist/EditLog.java
@@ -1116,6 +1116,11 @@ public static void loadJournal(Env env, Long logId, JournalEntity journal) {
                     env.getAlterInstance().processAlterMTMV(alterMtmv, true);
                     break;
                 }
+                case OperationType.OP_ALTER_REPOSITORY: {
+                    Repository repository = (Repository) journal.getData();
+                    env.getBackupHandler().getRepoMgr().alterRepo(repository, true);
+                    break;
+                }
                 default: {
                     IOException e = new IOException();
                     LOG.error("UNKNOWN Operation Type {}", opCode, e);
@@ -1524,6 +1529,10 @@ public void logDropRepository(String repoName) {
         logEdit(OperationType.OP_DROP_REPOSITORY, new Text(repoName));
     }
 
+    public void logAlterRepository(Repository repo) {
+        logEdit(OperationType.OP_ALTER_REPOSITORY, repo);
+    }
+
     public void logRestoreJob(RestoreJob job) {
         logEdit(OperationType.OP_RESTORE_JOB, job);
     }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/persist/OperationType.java b/fe/fe-core/src/main/java/org/apache/doris/persist/OperationType.java
index 0769cba0d81e11..af410c46986432 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/persist/OperationType.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/persist/OperationType.java
@@ -348,6 +348,8 @@ public class OperationType {
 
     public static final short OP_ALTER_MTMV = 459;
 
+    public static final short OP_ALTER_REPOSITORY = 460;
+
     /**
      * Get opcode name by op code.
      **/
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/DdlExecutor.java b/fe/fe-core/src/main/java/org/apache/doris/qe/DdlExecutor.java
index 5a2bae1ee05d99..9cb11b7630cded 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/DdlExecutor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/DdlExecutor.java
@@ -38,6 +38,7 @@
 import org.apache.doris.analysis.AlterDatabaseQuotaStmt;
 import org.apache.doris.analysis.AlterDatabaseRename;
 import org.apache.doris.analysis.AlterPolicyStmt;
+import org.apache.doris.analysis.AlterRepositoryStmt;
 import org.apache.doris.analysis.AlterResourceStmt;
 import org.apache.doris.analysis.AlterRoutineLoadStmt;
 import org.apache.doris.analysis.AlterSqlBlockRuleStmt;
@@ -389,6 +390,8 @@ public static void execute(Env env, DdlStmt ddlStmt) throws Exception {
         } else if (ddlStmt instanceof DropAnalyzeJobStmt) {
             DropAnalyzeJobStmt analyzeJobStmt = (DropAnalyzeJobStmt) ddlStmt;
             Env.getCurrentEnv().getAnalysisManager().dropAnalyzeJob(analyzeJobStmt);
+        } else if (ddlStmt instanceof AlterRepositoryStmt) {
+            env.getBackupHandler().alterRepository((AlterRepositoryStmt) ddlStmt);
         } else {
             LOG.warn("Unkown statement " + ddlStmt.getClass());
             throw new DdlException("Unknown statement.");
diff --git a/fe/fe-core/src/main/java/org/apache/doris/task/AgentTaskQueue.java b/fe/fe-core/src/main/java/org/apache/doris/task/AgentTaskQueue.java
index 1677701272cbe8..c22f0b2ee36100 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/task/AgentTaskQueue.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/task/AgentTaskQueue.java
@@ -135,6 +135,18 @@ public static synchronized AgentTask getTask(long backendId, TTaskType type, lon
         return signatureMap.get(signature);
     }
 
+    public static synchronized void updateTask(long backendId, TTaskType type, long signature, AgentTask newTask) {
+        if (!tasks.contains(backendId, type)) {
+            return;
+        }
+
+        Map<Long, AgentTask> signatureMap = tasks.get(backendId, type);
+        if (!signatureMap.containsKey(signature)) {
+            return;
+        }
+        signatureMap.put(signature, newTask);
+    }
+
     // this is just for unit test
     public static synchronized List<AgentTask> getTask(TTaskType type) {
         List<AgentTask> res = Lists.newArrayList();
diff --git a/fe/fe-core/src/main/java/org/apache/doris/task/DownloadTask.java b/fe/fe-core/src/main/java/org/apache/doris/task/DownloadTask.java
index 6482c5f807b08b..5dbbc46b7b26f2 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/task/DownloadTask.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/task/DownloadTask.java
@@ -78,6 +78,10 @@ public Map<String, String> getBrokerProperties() {
         return brokerProperties;
     }
 
+    public void updateBrokerProperties(Map<String, String> brokerProperties) {
+        this.brokerProperties = new java.util.HashMap<>(brokerProperties);
+    }
+
     public TDownloadReq toThrift() {
         // these fields are required
         // 1: required i64 job_id
diff --git a/fe/fe-core/src/main/java/org/apache/doris/task/UploadTask.java b/fe/fe-core/src/main/java/org/apache/doris/task/UploadTask.java
index f41d722825a33a..b2a4ae489ef814 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/task/UploadTask.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/task/UploadTask.java
@@ -24,6 +24,7 @@
 import org.apache.doris.thrift.TTaskType;
 import org.apache.doris.thrift.TUploadReq;
 
+import java.util.HashMap;
 import java.util.Map;
 
 public class UploadTask extends AgentTask {
@@ -64,6 +65,10 @@ public Map<String, String> getBrokerProperties() {
         return brokerProperties;
     }
 
+    public void updateBrokerProperties(Map<String, String> brokerProperties) {
+        this.brokerProperties = new HashMap<>(brokerProperties);
+    }
+
     public TUploadReq toThrift() {
         TNetworkAddress address = new TNetworkAddress(broker.host, broker.port);
         TUploadReq request = new TUploadReq(jobId, srcToDestPath, address);