diff --git a/src/main/java/com/gxwebsoft/ai/controller/AuditReportController.java b/src/main/java/com/gxwebsoft/ai/controller/AuditReportController.java
index c8b81b8..cd3ffc1 100644
--- a/src/main/java/com/gxwebsoft/ai/controller/AuditReportController.java
+++ b/src/main/java/com/gxwebsoft/ai/controller/AuditReportController.java
@@ -1603,7 +1603,7 @@ public class AuditReportController extends BaseController {
 //                    "数据源：1)取证单(已通过evidenceIds传入) 2)阿里云资料库(自动检索)\n" +
 //                    "要求：优先用取证单事实，结合资料库数据，不足时生成框架内容，勿编造数据。\n";
 
-            if(isEvidenceUsed && !evidenceIds.isEmpty()){
+            if(isEvidenceUsed && evidenceIds != null && !evidenceIds.isEmpty()){
                 // 将 ID 列表转换为逗号分隔的字符串
                 String evidenceIdsStr = evidenceIds.stream()
                         .map(String::valueOf)