diff --git a/blade-service/blade-system/src/main/java/org/springblade/process/controller/BusinessProcessController.java b/blade-service/blade-system/src/main/java/org/springblade/process/controller/BusinessProcessController.java
index 6f83dd9f..5566fe9a 100644
--- a/blade-service/blade-system/src/main/java/org/springblade/process/controller/BusinessProcessController.java
+++ b/blade-service/blade-system/src/main/java/org/springblade/process/controller/BusinessProcessController.java
@@ -60,6 +60,13 @@ public class BusinessProcessController extends BladeController {
 		return R.data(businessProcessService.processSubmit(param));
 	}
 
+	@GetMapping("/hasMkProcessInstance")
+	@ApiOperationSupport(order = 8)
+	@Operation(summary = "查询MK流程实例是否存在", description = "传入业务id（formInstanceId），有数据则无需删除/重新提交")
+	public R<Boolean> hasMkProcessInstance(@Valid @NotBlank(message = "业务id不能为空") String bizId) {
+		return R.data(businessProcessService.hasMkProcessInstance(bizId));
+	}
+
 	@PostMapping("/processDelete")
 	@ApiOperationSupport(order = 7)
 	public R<Boolean> processDelete(@RequestBody MKProcessCreateDTO param) {
diff --git a/blade-service/blade-system/src/main/java/org/springblade/process/service/IBusinessProcessService.java b/blade-service/blade-system/src/main/java/org/springblade/process/service/IBusinessProcessService.java
index e3b7834a..fd25cbb5 100644
--- a/blade-service/blade-system/src/main/java/org/springblade/process/service/IBusinessProcessService.java
+++ b/blade-service/blade-system/src/main/java/org/springblade/process/service/IBusinessProcessService.java
@@ -34,6 +34,14 @@ public interface IBusinessProcessService extends IService<BusinessProcess> {
 	 */
 	String processSubmit(MKProcessCreateDTO param);
 
+	/**
+	 * 按业务 id 查询 MK 流程实例是否仍有数据（本地有 processInstanceId 且 MK getProcessInfo 有返回）
+	 *
+	 * @param bizId 业务 id（如客商 id / formInstanceId）
+	 * @return true=流程实例仍存在
+	 */
+	boolean hasMkProcessInstance(String bizId);
+
 	/**
 	 * 按业务表单实例 id 删除 MK 流程（不删除本地业务流程记录，供驳回后重新提交使用）
 	 *
diff --git a/blade-service/blade-system/src/main/java/org/springblade/process/service/impl/BusinessProcessServiceImpl.java b/blade-service/blade-system/src/main/java/org/springblade/process/service/impl/BusinessProcessServiceImpl.java
index 088c83d5..fe45212a 100644
--- a/blade-service/blade-system/src/main/java/org/springblade/process/service/impl/BusinessProcessServiceImpl.java
+++ b/blade-service/blade-system/src/main/java/org/springblade/process/service/impl/BusinessProcessServiceImpl.java
@@ -137,6 +137,35 @@ public class BusinessProcessServiceImpl extends ServiceImpl<BusinessProcessMappe
 		param.setSubmitIdentity(loginName);
 		param.setLoginName(loginName);
 		String bizType = param.getBizType();
+
+		Long bizId;
+		try {
+			bizId = Long.valueOf(param.getFormInstanceId());
+		} catch (NumberFormatException e) {
+			throw new ServiceException("表单实例id格式不正确");
+		}
+		BusinessProcess businessProcess = this.getOne(Wrappers.<BusinessProcess>lambdaQuery()
+			.eq(BusinessProcess::getBizId, bizId)
+		);
+		// 已有流程实例且 MK 仍能查到详情时，不再删除、不再重新创建提交
+		if (businessProcess != null && StringUtil.isNotBlank(businessProcess.getProcessInstanceId())) {
+			String existingProcessInstanceId = businessProcess.getProcessInstanceId();
+			Object existingProcessInfo = this.getProcessInfo(existingProcessInstanceId, loginName);
+			if (hasProcessInfoData(existingProcessInfo)) {
+				log.info("MK流程实例已存在，跳过创建并提交流程 formInstanceId={} processInstanceId={}",
+					param.getFormInstanceId(), existingProcessInstanceId);
+				businessProcess.setApproveStatus(ApproveStatusEnum.APPROVING.getValue());
+				if (StringUtil.isNotBlank(param.getSubject())) {
+					businessProcess.setSubject(param.getSubject());
+				}
+				businessProcess.setPromoterLoginName(loginName);
+				this.updateById(businessProcess);
+				this.getCurrentNodes(existingProcessInstanceId, loginName);
+				this.syncBizFromProcessInfo(bizType, param.getFormInstanceId(), existingProcessInfo);
+				return existingProcessInstanceId;
+			}
+		}
+
 		MKProcessCreateDTO mkParam = new MKProcessCreateDTO();
 		mkParam.setFormInstanceId(param.getFormInstanceId());
 		mkParam.setSubject(param.getSubject());
@@ -149,15 +178,6 @@ public class BusinessProcessServiceImpl extends ServiceImpl<BusinessProcessMappe
 		String processInstanceId = mkService.processSubmit(mkParam);
 		AssertUtils.notBlank(processInstanceId, "提交流程失败，未返回流程实例id");
 
-		Long bizId;
-		try {
-			bizId = Long.valueOf(param.getFormInstanceId());
-		} catch (NumberFormatException e) {
-			throw new ServiceException("表单实例id格式不正确");
-		}
-		BusinessProcess businessProcess = this.getOne(Wrappers.<BusinessProcess>lambdaQuery()
-			.eq(BusinessProcess::getBizId, bizId)
-		);
 		if (businessProcess == null) {
 			businessProcess = new BusinessProcess();
 			businessProcess.setBizId(bizId);
@@ -186,6 +206,54 @@ public class BusinessProcessServiceImpl extends ServiceImpl<BusinessProcessMappe
 		return processInstanceId;
 	}
 
+	@Override
+	public boolean hasMkProcessInstance(String bizId) {
+		AssertUtils.notBlank(bizId, "业务id不能为空");
+		Long id;
+		try {
+			id = Long.valueOf(bizId);
+		} catch (NumberFormatException e) {
+			throw new ServiceException("业务id格式不正确");
+		}
+		BusinessProcess businessProcess = this.getOne(Wrappers.<BusinessProcess>lambdaQuery()
+			.eq(BusinessProcess::getBizId, id)
+			.last("limit 1")
+		);
+		if (businessProcess == null || StringUtil.isBlank(businessProcess.getProcessInstanceId())) {
+			return false;
+		}
+		String loginName = businessProcess.getPromoterLoginName();
+		if (StringUtil.isBlank(loginName)) {
+			loginName = resolveCurrentUserPhone();
+		}
+		if (StringUtil.isBlank(loginName)) {
+			log.warn("查询MK流程实例跳过，登录名为空 bizId={} processInstanceId={}",
+				bizId, businessProcess.getProcessInstanceId());
+			return false;
+		}
+		Object processInfo = this.getProcessInfo(businessProcess.getProcessInstanceId(), loginName);
+		return hasProcessInfoData(processInfo);
+	}
+
+	/**
+	 * MK getProcessInfo 是否返回有效数据
+	 */
+	private boolean hasProcessInfoData(Object processInfo) {
+		if (processInfo == null) {
+			return false;
+		}
+		if (processInfo instanceof Map<?, ?> map) {
+			return !map.isEmpty();
+		}
+		if (processInfo instanceof Collection<?> collection) {
+			return !collection.isEmpty();
+		}
+		if (processInfo instanceof CharSequence text) {
+			return StringUtil.isNotBlank(text.toString());
+		}
+		return true;
+	}
+
 	@Transactional(rollbackFor = Exception.class)
 	@Override
 	public boolean processDelete(String formInstanceId) {
@@ -358,17 +426,20 @@ public class BusinessProcessServiceImpl extends ServiceImpl<BusinessProcessMappe
 	}
 
 	/**
-	 * 从当前登录用户实体读取真实手机号（绕过接口返回脱敏）
+	 * 从当前登录用户实体读取真实手机号（库内 SM2 密文先解密，绕过接口脱敏）
 	 */
 	private String resolveCurrentUserPhone() {
 		Long userId = AuthUtil.getUserId();
 		if (userId != null) {
 			User user = userService.getById(userId);
-			if (user != null && StringUtil.isNotBlank(user.getPhone()) && !user.getPhone().contains("*")) {
-				return user.getPhone().trim();
-			}
-			if (user != null && StringUtil.isNotBlank(user.getAccount()) && user.getAccount().matches("^1\\d{10}$")) {
-				return user.getAccount().trim();
+			if (user != null) {
+				userService.decryptPhone(user);
+				if (StringUtil.isNotBlank(user.getPhone()) && !user.getPhone().contains("*")) {
+					return user.getPhone().trim();
+				}
+				if (StringUtil.isNotBlank(user.getAccount()) && user.getAccount().matches("^1\\d{10}$")) {
+					return user.getAccount().trim();
+				}
 			}
 		}
 		String account = AuthUtil.getUserAccount();
@@ -494,7 +565,9 @@ public class BusinessProcessServiceImpl extends ServiceImpl<BusinessProcessMappe
 			processInstanceId = businessProcess.getProcessInstanceId();
 		}
 		try {
-			String mkApprovalUrl = mkService.getMKApprovalUrl(processInstanceId, AuthUtil.getUserAccount());
+			String loginName = resolveCurrentUserPhone();
+			AssertUtils.notBlank(loginName, "当前用户手机号为空，无法获取审核跳转地址");
+			String mkApprovalUrl = mkService.getMKApprovalUrl(processInstanceId, loginName);
 			AssertUtils.notBlank(mkApprovalUrl, "获取mk审批页面链接异常");
 			return mkApprovalUrl;
 		} catch (MKException e) {
diff --git a/blade-service/blade-system/src/main/java/org/springblade/system/service/impl/UserServiceImpl.java b/blade-service/blade-system/src/main/java/org/springblade/system/service/impl/UserServiceImpl.java
index ace47304..e356b5f8 100644
--- a/blade-service/blade-system/src/main/java/org/springblade/system/service/impl/UserServiceImpl.java
+++ b/blade-service/blade-system/src/main/java/org/springblade/system/service/impl/UserServiceImpl.java
@@ -1130,22 +1130,22 @@ public class UserServiceImpl extends BaseServiceImpl<UserMapper, User> implement
 
 	@Override
 	public void decryptPhone(IPhone user) {
-//		if (user == null) {
-//			return;
-//		}
-//		if (user.getPhone() != null && user.getPhone().length() > 20) {
-//			user.setPhone(SM2Util.decrypt(user.getPhone(), properties.getPublicKey(), properties.getPrivateKey()));
-//		}
+		if (user == null) {
+			return;
+		}
+		if (user.getPhone() != null && user.getPhone().length() > 20) {
+			user.setPhone(SM2Util.decrypt(user.getPhone(), properties.getPublicKey(), properties.getPrivateKey()));
+		}
 	}
 
 	@Override
 	public void encryptPhone(IPhone user) {
-//		if (user == null) {
-//			return;
-//		}
-//		if(StringUtil.isNotBlank(user.getPhone())) {
-//			user.setPhone(Hex.toHexString(SM2Util.encrypt(user.getPhone(),properties.getPublicKey())));
-//		}
+		if (user == null) {
+			return;
+		}
+		if (StringUtil.isNotBlank(user.getPhone())) {
+			user.setPhone(Hex.toHexString(SM2Util.encrypt(user.getPhone(), properties.getPublicKey())));
+		}
 	}
 
 	private void validatePlainPassword(String password) {
diff --git a/blade-third-party-api/blade-mk-api/src/main/java/org/springblade/thirdparty/mk/service/impl/MKServiceImpl.java b/blade-third-party-api/blade-mk-api/src/main/java/org/springblade/thirdparty/mk/service/impl/MKServiceImpl.java
index e4b05985..eb5b1877 100644
--- a/blade-third-party-api/blade-mk-api/src/main/java/org/springblade/thirdparty/mk/service/impl/MKServiceImpl.java
+++ b/blade-third-party-api/blade-mk-api/src/main/java/org/springblade/thirdparty/mk/service/impl/MKServiceImpl.java
@@ -323,10 +323,13 @@ public class MKServiceImpl implements IMKService {
             return null;
         }
         String code = codeVO.getCode();
+        // 跳转域名使用 thirdParty.mk.baseUrl（loginUrl 在部分环境未配置会导致拼出相对路径 null/...）
+        AssertUtils.notBlank(properties.getBaseUrl(), "未配置 thirdParty.mk.baseUrl");
+        String mkBaseUrl = StringUtil.removeSuffix(properties.getBaseUrl().trim(), StringPool.SLASH);
         // 审批页面地址
-        String approvalUrl = String.format(APPROVAL_URL_FORMAT, properties.getLoginUrl(), processInstanceId, processInstanceId);
+        String approvalUrl = String.format(APPROVAL_URL_FORMAT, mkBaseUrl, processInstanceId, processInstanceId);
         // sso回调地址
-        return String.format(SSO_CALLBACK_URL_FORMAT, properties.getLoginUrl(), code, UrlUtil.encode(approvalUrl));
+        return String.format(SSO_CALLBACK_URL_FORMAT, mkBaseUrl, code, UrlUtil.encode(approvalUrl));
     }
 
     @Override