diff --git a/cds-platform-2025.V1/cds-common/cds-common-excel/src/main/java/org/dromara/common/excel/convert/ExcelBigNumberConvert.java b/cds-platform-2025.V1/cds-common/cds-common-excel/src/main/java/org/dromara/common/excel/convert/ExcelBigNumberConvert.java
index 5736798..7f1d391 100644
--- a/cds-platform-2025.V1/cds-common/cds-common-excel/src/main/java/org/dromara/common/excel/convert/ExcelBigNumberConvert.java
+++ b/cds-platform-2025.V1/cds-common/cds-common-excel/src/main/java/org/dromara/common/excel/convert/ExcelBigNumberConvert.java
@@ -28,7 +28,8 @@ public class ExcelBigNumberConvert implements Converter<Long> {
 
     @Override
     public CellDataTypeEnum supportExcelTypeKey() {
-        return CellDataTypeEnum.STRING;
+        //return CellDataTypeEnum.STRING;
+        return null;
     }
 
     @Override