diff --git a/chunjun-connectors/chunjun-connector-hdfs/src/main/java/com/dtstack/chunjun/connector/hdfs/converter/HdfsTextColumnConverter.java b/chunjun-connectors/chunjun-connector-hdfs/src/main/java/com/dtstack/chunjun/connector/hdfs/converter/HdfsTextColumnConverter.java
index 07717c71a4..121bd87f26 100644
--- a/chunjun-connectors/chunjun-connector-hdfs/src/main/java/com/dtstack/chunjun/connector/hdfs/converter/HdfsTextColumnConverter.java
+++ b/chunjun-connectors/chunjun-connector-hdfs/src/main/java/com/dtstack/chunjun/connector/hdfs/converter/HdfsTextColumnConverter.java
@@ -130,7 +130,7 @@ protected ISerializationConverter<String[]> wrapIntoNullableExternalConverter(
             ISerializationConverter serializationConverter, String type) {
         return (rowData, index, data) -> {
             if (rowData == null || rowData.isNullAt(index)) {
-                data[index] = null;
+                data[index] = "\\N";
             } else {
                 serializationConverter.serialize(rowData, index, data);
             }