diff --git a/src/api/system/business-process.js b/src/api/system/business-process.js
index 0ea48d5..5f78bf6 100644
--- a/src/api/system/business-process.js
+++ b/src/api/system/business-process.js
@@ -12,6 +12,7 @@ export const MK_SUBMIT_TIMEOUT = 30000;
  * @param {string} data.bizId 业务主键（后端生成/复用 formInstanceId）
  * @param {string} [data.subject] 流程标题
  * @param {string} [data.bizType] 业务类型
+ * @param {Object} [data.tempVarData] MK 临时变量（如 { projectType }）
  */
 export const processSubmit = data => {
   return request({
diff --git a/src/utils/mk-approval.js b/src/utils/mk-approval.js
index ee1b0ff..475dbf0 100644
--- a/src/utils/mk-approval.js
+++ b/src/utils/mk-approval.js
@@ -154,6 +154,7 @@ export function isMkApprovedStatus(bizType, approvalStatus) {
  * @param {string} [options.subjectName] 标题后缀
  * @param {string} [options.approvalStatus] 提交前的审批状态
  * @param {boolean} [options.mkEnabled] 调用方已知开关时传入，false 时立即跳过
+ * @param {Object} [options.tempVarData] 传给 MK 的临时变量（如项目类型 projectType）
  * @returns {Promise<boolean>} true=已发起/复用 MK 流程，false=未开启或已跳过
  */
 export async function submitMkApprovalFlow({
@@ -162,6 +163,7 @@ export async function submitMkApprovalFlow({
   subjectName = '',
   approvalStatus = '',
   mkEnabled,
+  tempVarData,
 } = {}) {
   const conf = MK_BIZ[bizType];
   if (!conf) {
@@ -202,12 +204,16 @@ export async function submitMkApprovalFlow({
   const subject = subjectName
     ? `${conf.subjectPrefix}：${subjectName}`
     : `${conf.subjectPrefix}：${bizIdText}`;
-  await processSubmit({
+  const submitPayload = {
     templateCode,
     bizId: bizIdText,
     subject,
     bizType,
     forceNewFormInstance,
-  });
+  };
+  if (tempVarData != null && typeof tempVarData === 'object') {
+    submitPayload.tempVarData = tempVarData;
+  }
+  await processSubmit(submitPayload);
   return true;
 }
diff --git a/src/views/business/project-apply.vue b/src/views/business/project-apply.vue
index 0242715..19d4af2 100644
--- a/src/views/business/project-apply.vue
+++ b/src/views/business/project-apply.vue
@@ -2012,15 +2012,20 @@ export default {
       const run = value => {
         const args = operation.prompt ? [row.id, value] : [row.id];
         const request = () => this.api[operation.action](...args);
+        // 先本地提交再调 MK：MK 成功后会把状态同步成 reviewing，
+        // 若先 MK 再本地，已撤回/已驳回单据会被「当前状态不允许编辑」拦住。
         const afterMk =
           operation.action === 'submitApproval'
-            ? submitMkApprovalFlow({
-                bizType: 'project-apply',
-                bizId: row.id,
-                subjectName: row.projectName || '',
-                approvalStatus: row.approvalStatus || '',
-                mkEnabled: this.mkEnabled,
-              }).then(() => request())
+            ? request().then(() =>
+                submitMkApprovalFlow({
+                  bizType: 'project-apply',
+                  bizId: row.id,
+                  subjectName: row.projectName || '',
+                  approvalStatus: row.approvalStatus || '',
+                  mkEnabled: this.mkEnabled,
+                  tempVarData: { projectType: row.projectType || '' },
+                })
+              )
             : request();
         // 项目通过会同步等待合规推送，加遮罩防重复点击
         const loading =
@@ -2264,6 +2269,9 @@ export default {
                 subjectName: name,
                 approvalStatus: status,
                 mkEnabled: this.mkEnabled,
+                tempVarData: {
+                  projectType: this.form.projectType || data.projectType || '',
+                },
               }).then(() => {
                 this.$message.success('提交成功!');
                 this.closeProjectForm();
@@ -2384,6 +2392,7 @@ export default {
                 subjectName: this.form.projectName || '',
                 approvalStatus,
                 mkEnabled: this.mkEnabled,
+                tempVarData: { projectType: this.form.projectType || '' },
               }).then(() => {
                 this.$message.success('提交成功!');
                 this.closeProjectForm();
@@ -2409,6 +2418,7 @@ export default {
               subjectName: this.form.projectName || '',
               approvalStatus: this.form.approvalStatus || 'change_rejected',
               mkEnabled: this.mkEnabled,
+              tempVarData: { projectType: this.form.projectType || '' },
             }).then(() => {
               this.$message.success('提交成功!');
               this.closeProjectForm();
diff --git a/src/views/business/project-change.vue b/src/views/business/project-change.vue
index 7fa0031..ca20b94 100644
--- a/src/views/business/project-change.vue
+++ b/src/views/business/project-change.vue
@@ -214,15 +214,19 @@ export default {
       }
       const run = () => {
         const request = () => this.api[operation.action](row.id);
+        // 先本地提交再调 MK，避免 MK 回写 reviewing 后本地 submitApproval 被编辑校验拦住。
         const afterMk =
           operation.action === 'submitApproval'
-            ? submitMkApprovalFlow({
-                bizType: 'project-change',
-                bizId: row.id,
-                subjectName: row.projectName || '',
-                approvalStatus: row.approvalStatus || '',
-                mkEnabled: this.mkEnabled,
-              }).then(() => request())
+            ? request().then(() =>
+                submitMkApprovalFlow({
+                  bizType: 'project-change',
+                  bizId: row.id,
+                  subjectName: row.projectName || '',
+                  approvalStatus: row.approvalStatus || '',
+                  mkEnabled: this.mkEnabled,
+                  tempVarData: { projectType: row.projectType || '' },
+                })
+              )
             : request();
         const loading =
           operation.action === 'approve'