diff --git a/jeecg-boot/jeecg-module-demo/src/main/java/org/jeecg/modules/demo/blTeacherAnswer/service/impl/BlTeacherAnswerServiceImpl.java b/jeecg-boot/jeecg-module-demo/src/main/java/org/jeecg/modules/demo/blTeacherAnswer/service/impl/BlTeacherAnswerServiceImpl.java
index e389cb5..f3c04f3 100644
--- a/jeecg-boot/jeecg-module-demo/src/main/java/org/jeecg/modules/demo/blTeacherAnswer/service/impl/BlTeacherAnswerServiceImpl.java
+++ b/jeecg-boot/jeecg-module-demo/src/main/java/org/jeecg/modules/demo/blTeacherAnswer/service/impl/BlTeacherAnswerServiceImpl.java
@@ -472,8 +472,11 @@ public class BlTeacherAnswerServiceImpl extends ServiceImpl<BlTeacherAnswerMappe
 //            wo2.changeTableFillColor(tableMerge.getTableIndex(), tableMerge.getEndRow()+1, tableMerge.getCol(), i % 2 == 0?"c5d5e9":"f6f8fc");
 //            i++;
 //        }
-        TableMerge tableMerge2 =allMergeList1.get(0);
-        wo2.addTableMerge(tableMerge2, (tableMerge2.getStartRow()+1) % 2 == 0?"c5d5e9":"f6f8fc");
+
+        if(!allMergeList1.isEmpty()) {
+            TableMerge tableMerge2 =allMergeList1.get(0);
+            wo2.addTableMerge(tableMerge2, (tableMerge2.getStartRow()+1) % 2 == 0?"c5d5e9":"f6f8fc");
+        }
 
         i = 0;
         for (TableMerge tableMerge : allMergeList2){