diff --git a/fe/fe-core/src/main/java/org/apache/doris/catalog/TableProperty.java b/fe/fe-core/src/main/java/org/apache/doris/catalog/TableProperty.java
index 7d1c4cab36..427b09af0a 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/catalog/TableProperty.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/catalog/TableProperty.java
@@ -149,6 +149,7 @@ public class TableProperty implements Writable {
 
     public void modifyTableProperties(Map<String, String> modifyProperties) {
         properties.putAll(modifyProperties);
+        removeDuplicateReplicaNumProperty();
     }
 
     public void modifyDataSortInfoProperties(DataSortInfo dataSortInfo) {
@@ -237,7 +238,18 @@ public class TableProperty implements Writable {
                         ReplicaAllocation.DEFAULT_ALLOCATION.toCreateStmt());
             }
         }
+        tableProperty.removeDuplicateReplicaNumProperty();
         tableProperty.buildReplicaAllocation();
         return tableProperty;
     }
+
+    // For some historical reason, both "dynamic_partition.replication_num" and "dynamic_partition.replication_allocation"
+    // may be exist in "properties". we need remove the "dynamic_partition.replication_num", or it will always replace
+    // the "dynamic_partition.replication_allocation", result in unable to set "dynamic_partition.replication_allocation".
+    private void removeDuplicateReplicaNumProperty() {
+        if (properties.containsKey(DynamicPartitionProperty.REPLICATION_NUM)
+                && properties.containsKey(DynamicPartitionProperty.REPLICATION_ALLOCATION)) {
+            properties.remove(DynamicPartitionProperty.REPLICATION_NUM);
+        }
+    }
 }