diff --git a/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java b/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java
index 0ae1b20b1e..e9cd7ae4ad 100644
--- a/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java
@@ -1197,6 +1197,8 @@ public class ExtractDataService {
             }
             if (StringUtils.isNotEmpty(charset)) {
                 tmp_code = tmp_code.replace("handleCharset", handleCharset.replace("Datasource_Charset", charset).replace("Target_Charset", targetCharset));
+            }else {
+                tmp_code = tmp_code.replace("handleCharset", "");
             }
         } else {
             Column_Fields = datasetTableFields.stream().map(DatasetTableField::getDataeaseName).collect(Collectors.joining(","));