diff --git a/business-css/src/main/java/com/yfd/business/css/service/impl/ProjectServiceImpl.java b/business-css/src/main/java/com/yfd/business/css/service/impl/ProjectServiceImpl.java
index dc42a9b..81ef5c6 100644
--- a/business-css/src/main/java/com/yfd/business/css/service/impl/ProjectServiceImpl.java
+++ b/business-css/src/main/java/com/yfd/business/css/service/impl/ProjectServiceImpl.java
@@ -95,7 +95,7 @@ public class ProjectServiceImpl
                 row.createCell(1).setCellValue(p.getCode() == null ? "" : p.getCode());
                 row.createCell(2).setCellValue(p.getName() == null ? "" : p.getName());
                 row.createCell(3).setCellValue(p.getDescription() == null ? "" : p.getDescription());
-                row.createCell(4).setCellValue(p.getTopology() == null ? "" : p.getTopology());
+                row.createCell(4).setCellValue(clampExcelCellText(p.getTopology()));
                 row.createCell(5).setCellValue(p.getCreatedAt() == null ? "" : fmt.format(p.getCreatedAt()));
                 row.createCell(6).setCellValue(p.getUpdatedAt() == null ? "" : fmt.format(p.getUpdatedAt()));
                 row.createCell(7).setCellValue(p.getModifier() == null ? "" : p.getModifier());
@@ -109,6 +109,14 @@ public class ProjectServiceImpl
         }
     }
 
+    private static String clampExcelCellText(String s) {
+        if (s == null) return "";
+        int max = 32767;
+        if (s.length() <= max) return s;
+        if (max <= 3) return s.substring(0, max);
+        return s.substring(0, max - 3) + "...";
+    }
+
     @Override
     /**
      * 解析指定项目的拓扑结构，生成节点、边与线性计算计划
@@ -1256,7 +1264,7 @@ public class ProjectServiceImpl
                 row.createCell(1).setCellValue(p.getCode()==null?"":p.getCode());
                 row.createCell(2).setCellValue(p.getName()==null?"":p.getName());
                 row.createCell(3).setCellValue(p.getDescription()==null?"":p.getDescription());
-                row.createCell(4).setCellValue(p.getTopology()==null?"":p.getTopology());
+                row.createCell(4).setCellValue(clampExcelCellText(p.getTopology()));
                 row.createCell(5).setCellValue(p.getVisibility()==null?"":p.getVisibility());
                 row.createCell(6).setCellValue(p.getCreator()==null?"":p.getCreator());
                 row.createCell(7).setCellValue(p.getCreatedAt()==null?"":fmt.format(p.getCreatedAt()));
@@ -1800,4 +1808,3 @@ public class ProjectServiceImpl
 // }
 
 }
-