diff --git a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
index 49ebc00bb5..e6b944db19 100644
--- a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
@@ -1183,6 +1183,7 @@ public class DataSetTableService {
 
         if (StringUtils.isNotEmpty(tableId) && editType == 1 ) {
             List<DatasetTableField> datasetTableFields = dataSetTableFieldsService.getFieldsByTableId(tableId);
+            datasetTableFields.stream().filter(datasetTableField -> datasetTableField.getName().startsWith("C_")).collect(Collectors.toList());
             datasetTableFields.sort((o1, o2) -> {
                 if (o1.getColumnIndex() == null) {
                     return -1;
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 53bdf602fe..09c5226a65 100644
--- a/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java
@@ -164,6 +164,7 @@ public class ExtractDataService {
         if(datasetTableFields == null){
             datasetTableFields = dataSetTableFieldsService.list(DatasetTableField.builder().tableId(datasetTable.getId()).build());
         }
+        datasetTableFields = datasetTableFields.stream().filter(datasetTableField -> datasetTableField.getName().startsWith("C_")).collect(Collectors.toList());
         datasetTableFields.sort((o1, o2) -> {
             if (o1.getColumnIndex() == null) {
                 return -1;
@@ -273,6 +274,7 @@ public class ExtractDataService {
             datasource.setType(datasetTable.getType());
         }
         List<DatasetTableField> datasetTableFields = dataSetTableFieldsService.list(DatasetTableField.builder().tableId(datasetTable.getId()).build());
+        datasetTableFields = datasetTableFields.stream().filter(datasetTableField -> datasetTableField.getName().startsWith("C_")).collect(Collectors.toList());
         datasetTableFields.sort((o1, o2) -> {
             if (o1.getColumnIndex() == null) {
                 return -1;