diff --git a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpContractInfoServiceImpl.java b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpContractInfoServiceImpl.java
index 7fc10c4a..6ee143b2 100644
--- a/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpContractInfoServiceImpl.java
+++ b/ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpContractInfoServiceImpl.java
@@ -697,18 +697,23 @@ public class ErpContractInfoServiceImpl implements IErpContractInfoService {
     @Override
     @GlobalTransactional(rollbackFor = Exception.class)
     public ErpContractInfoVo contractSubmitAndFlowStart(ErpContractInfoBo bo) {
-        // 统一补齐并落库：flowCode/variables/bizExt/contractStatus/flowStatus
         fillContractOacParams(bo);
-        ErpContractInfo add = MapstructUtils.convert(bo, ErpContractInfo.class);
+        // 重新发起须删旧实例后再 startWorkFlow
+        boolean clearedFinishedFlow = resetFinishedContractFlowForResubmit(bo);
+        if (clearedFinishedFlow) {
+            bo.setContractStatus(OAStatusEnum.APPROVING.getStatus());
+            bo.setFlowStatus(BusinessStatusEnum.WAITING.getStatus());
+        }
         if (StringUtils.isNull(bo.getContractId())) {
             this.insertByBo(bo);
         } else {
             this.updateByBo(bo);
         }
-        // 后端发起需要忽略权限
         Map<String, Object> vars = bo.getVariables();
-        vars.put("ignore", true);
-        bo.setVariables(vars);
+        if (vars != null) {
+            vars.put("ignore", true);
+            bo.setVariables(vars);
+        }
         RemoteStartProcess startProcess = new RemoteStartProcess();
         startProcess.setBusinessId(bo.getContractId().toString());
         startProcess.setFlowCode(bo.getFlowCode());
@@ -719,7 +724,32 @@ public class ErpContractInfoServiceImpl implements IErpContractInfoService {
         if (!flagOne) {
             throw new ServiceException("流程发起异常");
         }
-        return MapstructUtils.convert(add, ErpContractInfoVo.class);
+        return queryById(bo.getContractId());
+    }
+
+    /**
+     * 审批已通过且合同未激活，删除已结束流程实例，清空状态以便重新发起。
+     */
+    private boolean resetFinishedContractFlowForResubmit(ErpContractInfoBo bo) {
+        if (bo == null || bo.getContractId() == null) {
+            return false;
+        }
+        ErpContractInfoVo current = queryById(bo.getContractId());
+        if (current == null) {
+            return false;
+        }
+        if (!OAStatusEnum.COMPLETED.getStatus().equals(current.getContractStatus())) {
+            return false;
+        }
+        String wfStatus = remoteWorkflowService.getBusinessStatus(String.valueOf(bo.getContractId()));
+        if (!BusinessStatusEnum.FINISH.getStatus().equals(wfStatus)) {
+            return false;
+        }
+        log.info("合同[{}]重新发起审批：删除已结束流程实例后重新发起", bo.getContractId());
+        remoteWorkflowService.deleteInstance(Collections.singletonList(bo.getContractId()));
+        bo.setContractStatus(null);
+        bo.setFlowStatus(null);
+        return true;
     }
 
     /**
@@ -729,6 +759,9 @@ public class ErpContractInfoServiceImpl implements IErpContractInfoService {
         if (bo == null) {
             return;
         }
+        if (bo.getVariables() == null) {
+            bo.setVariables(new HashMap<>());
+        }
         if (StringUtils.isBlank(bo.getFlowCode())) {
             bo.setFlowCode(FLOW_CODE_CONTRACT);
         }