diff --git a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
index a5d1070..9064ad3 100644
--- a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
+++ b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
@@ -266,6 +266,7 @@ public class QualFilingChangeExecutor implements QualFilingChangeApi {
             AggregationSaveOrEditQualFilingChangeCmd cmd, boolean throwException) {
         validateBeforeSaveOrEdit(cmd);
 
+        cmd.getQualFilingCommitmentChangeAddCmd().setLegalRepSignatureUrl(CommonUtil.COLON);
         // 合规性校验：只要有一项未通过则抛出异常
         AggregationSaveOrEditQualFilingCmd qualFilingCmd = convertToQualFilingCmd(cmd);
         List<QualFilingComplianceCheckResultCO> complianceResults = ComplianceCheckUtil.complianceCheck(qualFilingCmd, throwException);