diff --git a/databendwriter/src/main/java/com/alibaba/datax/plugin/writer/databendwriter/util/DatabendWriterUtil.java b/databendwriter/src/main/java/com/alibaba/datax/plugin/writer/databendwriter/util/DatabendWriterUtil.java
index 00a7c62a..036baf69 100644
--- a/databendwriter/src/main/java/com/alibaba/datax/plugin/writer/databendwriter/util/DatabendWriterUtil.java
+++ b/databendwriter/src/main/java/com/alibaba/datax/plugin/writer/databendwriter/util/DatabendWriterUtil.java
@@ -32,7 +32,7 @@ public final class DatabendWriterUtil {
                 LOG.error("Replace mode must has onConflictColumn conf");
                 return;
             }
-            // for databend if you want to use replace mode, the writeMode should be:  "writeMode": "replace (userid)"
+            // for databend if you want to use replace mode, the writeMode should be:  "writeMode": "replace"
             writeDataSqlTemplate.append("REPLACE INTO %s (")
                     .append(StringUtils.join(columns, ",")).append(") ").append(onConFlictDoString(onConflictColumns))
                     .append(" VALUES");