diff --git a/command-line-flags-for-tidb-configuration.md b/command-line-flags-for-tidb-configuration.md
index a6a7e05f50b5d..13b409dac8a2e 100644
--- a/command-line-flags-for-tidb-configuration.md
+++ b/command-line-flags-for-tidb-configuration.md
@@ -14,12 +14,6 @@ When you start the TiDB cluster, you can use command-line options or environment
 - Default: ""
 - This address must be accessible by the rest of the TiDB cluster and the user.
 
-## `--binlog-socket`
-
-- The TiDB services use the unix socket file for internal connections, such as the Pump service
-- Default: ""
-- You can use "/tmp/pump.sock" to accept the communication of Pump unix socket file.
-
 ## `--config`
 
 - The configuration file
@@ -103,11 +97,6 @@ When you start the TiDB cluster, you can use command-line options or environment
 - Default: "/tmp/tidb"
 - You can use `tidb-server --store=unistore --path=""` to enable a pure in-memory TiDB.
 
-## `--tmp-storage-path`
-
-+ TiDB's temporary storage path
-+ Default: `<TMPDIR>/tidb/tmp-storage`
-
 ## `--proxy-protocol-networks`
 
 - The list of proxy server's IP addresses allowed to connect to TiDB using the [PROXY protocol](https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt).