diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/SlotRef.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/SlotRef.java
index 78ab6b341a23ff..4cd58f23650b52 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/SlotRef.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/SlotRef.java
@@ -269,7 +269,7 @@ public String toSqlImpl() {
             // virtual slot of an alias function
             // when we try to translate an alias function to Nereids style, the desc in the place holding slotRef
             // is null, and we just need the name of col.
-            return col;
+            return "`" + col + "`";
         } else if (desc.getSourceExprs() != null) {
             if (!disableTableName && (ToSqlContext.get() == null || ToSqlContext.get().isNeedSlotRefId())) {
                 if (desc.getId().asInt() != 1) {