diff --git a/seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/sink/HttpPutBuilder.java b/seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/sink/HttpPutBuilder.java
index 100719f57af..73580e2115c 100644
--- a/seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/sink/HttpPutBuilder.java
+++ b/seatunnel-connectors-v2/connector-doris/src/main/java/org/apache/seatunnel/connectors/doris/sink/HttpPutBuilder.java
@@ -49,6 +49,7 @@ public HttpPutBuilder setUrl(String url) {
 
     public HttpPutBuilder addCommonHeader() {
         header.put(HttpHeaders.EXPECT, "100-continue");
+        header.put("Content-Type", "text/plain");
         return this;
     }