diff --git a/src/gausskernel/process/threadpool/knl_thread.cpp b/src/gausskernel/process/threadpool/knl_thread.cpp
index e7761d0d8..29b106ee7 100755
--- a/src/gausskernel/process/threadpool/knl_thread.cpp
+++ b/src/gausskernel/process/threadpool/knl_thread.cpp
@@ -1498,6 +1498,7 @@ static void knl_t_walsender_init(knl_t_walsender_context* walsender_cxt)
     walsender_cxt->restoreLogicalLogHead = NULL;
     walsender_cxt->isUseSnapshot = false;
     walsender_cxt->firstConfirmedFlush = InvalidXLogRecPtr;
+    walsender_cxt->timeoutCheckInternal = 0;
 }
 
 static void knl_t_tsearch_init(knl_t_tsearch_context* tsearch_cxt)
diff --git a/src/gausskernel/storage/replication/walsender.cpp b/src/gausskernel/storage/replication/walsender.cpp
index 93b0d7a6e..c4ba65083 100755
--- a/src/gausskernel/storage/replication/walsender.cpp
+++ b/src/gausskernel/storage/replication/walsender.cpp
@@ -3831,6 +3831,12 @@ static int WalSndLoop(WalSndSendDataCallback send_data)
     t_thrd.walsender_cxt.last_logical_xlog_advanced_timestamp = GetCurrentTimestamp();
     t_thrd.walsender_cxt.last_logical_slot_advanced_timestamp = GetCurrentTimestamp();
     t_thrd.walsender_cxt.waiting_for_ping_response = false;
+#define MINUTE_30 (30 * 60 * 1000) /* 30 minutes */
+    t_thrd.walsender_cxt.timeoutCheckInternal = u_sess->attr.attr_storage.wal_sender_timeout;
+    if (strcmp(u_sess->attr.attr_common.application_name, "gs_probackup") == 0 &&
+        t_thrd.walsender_cxt.timeoutCheckInternal < MINUTE_30) {
+        t_thrd.walsender_cxt.timeoutCheckInternal = MINUTE_30;
+    }
 
     ResourceOwner tmpOwner = t_thrd.utils_cxt.CurrentResourceOwner;
     Assert(!IsTransactionOrTransactionBlock() &&
@@ -7226,9 +7232,9 @@ static int WalSndTimeout()
         /* DataSender -> IdentifyMode */
         return u_sess->attr.attr_storage.wal_sender_timeout;
     } else if (walsnd->sendRole == SNDROLE_PRIMARY_BUILDSTANDBY) {
-        return MULTIPLE_TIME * u_sess->attr.attr_storage.wal_sender_timeout;
+        return MULTIPLE_TIME * t_thrd.walsender_cxt.timeoutCheckInternal;
     } else {
-        return u_sess->attr.attr_storage.wal_sender_timeout;
+        return t_thrd.walsender_cxt.timeoutCheckInternal;
     }
 }
 
diff --git a/src/include/knl/knl_thread.h b/src/include/knl/knl_thread.h
index 4d017164f..30abac4a0 100755
--- a/src/include/knl/knl_thread.h
+++ b/src/include/knl/knl_thread.h
@@ -2427,6 +2427,13 @@ typedef struct knl_t_walsender_context {
     /* Timestamp of the last check-timeout time in WalSndCheckTimeOut. */
     TimestampTz last_check_timeout_timestamp;
 
+    /*
+     * Actual timeout for guc wal_sender_timeout, default value is wal_sender_timeout.
+     * timeoutCheckInternal will greater than or equal to 30 minutes for gs_probackup. It is so
+     * hackly of 30 minutes, but now, 30 minutes is enough.
+     */
+    int timeoutCheckInternal;
+
     /* Read data from WAL into xlogReadBuf, then compress it to compressBuf */
     char *xlogReadBuf;
     char *compressBuf;