diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/common/util/ExcelDownUtil.java b/pmapi/src/main/java/com/ningdatech/pmapi/common/util/ExcelDownUtil.java
index 6e36faf..faac1bb 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/common/util/ExcelDownUtil.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/common/util/ExcelDownUtil.java
@@ -234,7 +234,7 @@ public class ExcelDownUtil {
                         columnValue = jsonObject.getString(column.toString());
                     }
                 }
-                if (CommonConst.NULL.equals(columnValue)) {
+                if (Objects.isNull(columnValue) || CommonConst.NULL.equals(columnValue)) {
                     columnValue = "";
                 }
                 columnValues.add(columnValue);