diff --git a/src/plan/plan.service.spec.ts b/src/plan/plan.service.spec.ts
index 8bf31d4..2f633b9 100644
--- a/src/plan/plan.service.spec.ts
+++ b/src/plan/plan.service.spec.ts
@@ -136,7 +136,7 @@ describe('PlanService', () => {
         elderId: 'e1',
         itemCount: 18,
         itemCountRule: 'inst_medical/care_1 ≥18 项',
-        planStatus: 'draft',
+        planStatus: 'active',
         tenantCode: 'T001',
         createdBy: 'u1',
       }),
@@ -208,12 +208,12 @@ describe('PlanService', () => {
     );
 
     expect(planCreate).toHaveBeenCalledWith({
-      data: expect.objectContaining({ careMode: 'home_org', itemCount: 0, planStatus: 'draft' }),
+      data: expect.objectContaining({ careMode: 'home_org', itemCount: 0, planStatus: 'active' }),
     });
   });
 
   it('变更留旧版：旧计划转 changed + 新计划 change_from_plan_id', async () => {
-    const planFindUnique = vi.fn().mockResolvedValue({ id: 'p-old', planStatus: 'active' });
+    const planFindUnique = vi.fn().mockResolvedValue({ id: 'p-old', elderId: 'e1', planStatus: 'active' });
     const planCreate = vi.fn().mockResolvedValue({ id: 'p-new' });
     const planUpdate = vi.fn().mockResolvedValue({ id: 'p-old' });
     const { service } = makeService({ planFindUnique, planCreate, planUpdate });
@@ -233,8 +233,8 @@ describe('PlanService', () => {
     });
   });
 
-  it('确认置 confirm_time + elder/guardian 布尔 + 转 active', async () => {
-    const planFindUnique = vi.fn().mockResolvedValue({ id: 'p1', planStatus: 'draft' });
+  it('确认置 confirm_time + elder/guardian 布尔，不改变 plan_status', async () => {
+    const planFindUnique = vi.fn().mockResolvedValue({ id: 'p1', planStatus: 'active' });
     const planUpdate = vi.fn().mockResolvedValue({ id: 'p1' });
     const { service } = makeService({ planFindUnique, planUpdate });
 
@@ -242,15 +242,30 @@ describe('PlanService', () => {
 
     expect(planUpdate).toHaveBeenCalledWith({
       where: { id: 'p1' },
-      data: expect.objectContaining({
+      data: {
         confirmElder: true,
         confirmGuardian: false,
         confirmTime: expect.any(Date),
-        planStatus: 'active',
-      }),
+      },
     });
   });
 
+  it('变更计划 elder 不匹配 → 拒绝，不写新计划', async () => {
+    const planFindUnique = vi.fn().mockResolvedValue({ id: 'p-old', elderId: 'e-other', planStatus: 'active' });
+    const planCreate = vi.fn();
+    const planUpdate = vi.fn();
+    const { service } = makeService({ planFindUnique, planCreate, planUpdate });
+
+    await expect(
+      runWithRequestContext(ctx, () =>
+        service.change({ ...baseDto, careMode: 'home_org', items: [], changeFromPlanId: 'p-old' }),
+      ),
+    ).rejects.toMatchObject({ response: { code: ErrorCodes.PLAN_NOT_FOUND } });
+
+    expect(planCreate).not.toHaveBeenCalled();
+    expect(planUpdate).not.toHaveBeenCalled();
+  });
+
   it('detail 返回计划头 + 计划项', async () => {
     const planFindUnique = vi.fn().mockResolvedValue({ id: 'p1', elderId: 'e1', planStatus: 'active' });
     const planItemFindMany = vi.fn().mockResolvedValue([{ id: 'pi1', planId: 'p1' }]);
diff --git a/src/plan/plan.service.ts b/src/plan/plan.service.ts
index d813b10..375f48a 100644
--- a/src/plan/plan.service.ts
+++ b/src/plan/plan.service.ts
@@ -17,7 +17,7 @@ interface ResolvedPlanItem extends PlanItemInputDto {
  * 服务计划（svc_plan/svc_plan_item）业务服务。
  *
  * - 制定计划：校验老人存在 + 每个 svc_id 落本机构 L4 + 属地项数（昆明校验/州市提示）；
- *   快照 item_count/item_count_rule，plan_status 默认 draft；写 plan_item（svc_name/code 快照）。
+ *   快照 item_count/item_count_rule，plan_status=active；写 plan_item（svc_name/code 快照）。
  * - 变更计划：新建 Plan + change_from_plan_id 指向旧计划，旧计划转 changed，不原地改。
  * - 确认：置 confirm_time + elder/guardian 布尔，计划转 active。
  */
@@ -25,20 +25,23 @@ interface ResolvedPlanItem extends PlanItemInputDto {
 export class PlanService {
   constructor(private readonly prisma: PrismaService) {}
 
-  /** 制定服务计划（draft）。 */
+  /** 制定服务计划（active）。 */
   create(dto: CreatePlanDto) {
-    return this.buildPlan(dto, { planStatus: 'draft' });
+    return this.buildPlan(dto, { planStatus: 'active' });
   }
 
   /** 变更服务计划：新建 active 计划并指向旧计划，旧计划转 changed。 */
   async change(dto: ChangePlanDto) {
-    await this.requireExists(dto.changeFromPlanId);
+    const oldPlan = await this.requireExists(dto.changeFromPlanId);
+    if (oldPlan.elderId !== dto.elderId) {
+      throw new BusinessException(ErrorCodes.PLAN_NOT_FOUND, '被变更计划不属于该老人', HttpStatus.BAD_REQUEST);
+    }
     const newPlan = await this.buildPlan(dto, { planStatus: 'active', changeFromPlanId: dto.changeFromPlanId });
     await this.prisma.client.plan.update({ where: { id: dto.changeFromPlanId }, data: { planStatus: 'changed' } });
     return newPlan;
   }
 
-  /** 确认计划：置确认时间与老人/家属布尔，计划转 active。 */
+  /** 确认计划：仅写确认时间与老人/家属布尔（不改变 plan_status）。 */
   async confirm(id: string, dto: ConfirmPlanDto) {
     await this.requireExists(id);
     return this.prisma.client.plan.update({
@@ -47,7 +50,6 @@ export class PlanService {
         confirmElder: dto.confirmElder,
         confirmGuardian: dto.confirmGuardian ?? false,
         confirmTime: new Date(),
-        planStatus: 'active',
       },
     });
   }