diff --git a/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java b/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java
index dd37b6795..d54e12855 100644
--- a/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java
+++ b/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java
@@ -73,7 +73,7 @@ public class CellMergeHandler {
                 Object val = ReflectUtils.invokeGetter(rowObj, field.getName());
 
                 int colNum = mergeFieldsIndex.get(j);
-                if (!map.containsKey(field)) {
+                if (!map.containsKey(field) || (map.get(field).value() == null && val != null)) {
                     map.put(field, new RepeatCell(val, i));
                 } else {
                     RepeatCell repeatCell = map.get(field);