diff --git a/src/api/edu/contract/types.ts b/src/api/edu/contract/types.ts
index 9af746d..5a24f92 100644
--- a/src/api/edu/contract/types.ts
+++ b/src/api/edu/contract/types.ts
@@ -37,6 +37,8 @@ export const paymentMethodOptions = [
   { label: '信用卡', value: 'CARD' }
 ];
 
+import type { PaymentPlanVO, PaymentPlanForm } from '@/api/edu/payment-plan/types';
+
 export interface ContractPackageVO {
   id: number | string;
   contractId: number | string;
@@ -141,6 +143,8 @@ export interface ContractVO extends BaseEntity {
   logs: any[];
   /** 里程碑列表(升学服务合同) */
   milestones?: any[];
+  /** 缴费计划列表(分期合同) */
+  paymentPlans?: PaymentPlanVO[];
 }
 
 export interface ContractForm {
@@ -161,6 +165,12 @@ export interface ContractForm {
   isInstallment: string;
   installmentSecond: number;
   installmentThird: number;
+  /** 分期数 2 或 3 */
+  installmentCount?: number;
+  /** 缴费计划明细(分期时携带) */
+  paymentPlans?: PaymentPlanForm[];
+  /** 应收总额(前端汇总展示, 后端汇总覆盖) */
+  totalAmount?: number;
   actualTotalReceived: number;
   settlementDate: string;
   signPerson: string;
diff --git a/src/api/edu/payment-plan/index.ts b/src/api/edu/payment-plan/index.ts
new file mode 100644
index 0000000..06b147d
--- /dev/null
+++ b/src/api/edu/payment-plan/index.ts
@@ -0,0 +1,18 @@
+import request from '@/utils/request';
+import { AxiosPromise } from 'axios';
+import { PaymentPlanVO, PaymentReceiveForm, EduPaymentPlanBoPayload } from './types';
+
+// 查询某合同的缴费计划列表
+export function listPaymentPlan(contractId: number | string): AxiosPromise<PaymentPlanVO[]> {
+  return request({ url: '/edu/contract/payment-plan/list/' + contractId, method: 'get' });
+}
+
+// 修改单期计划(仅待收态)
+export function updatePaymentPlan(data: EduPaymentPlanBoPayload) {
+  return request({ url: '/edu/contract/payment-plan', method: 'put', data });
+}
+
+// 收款确认(联动账本)
+export function receivePayment(data: PaymentReceiveForm) {
+  return request({ url: '/edu/contract/payment-plan/receive', method: 'put', data });
+}
diff --git a/src/api/edu/payment-plan/types.ts b/src/api/edu/payment-plan/types.ts
new file mode 100644
index 0000000..199a899
--- /dev/null
+++ b/src/api/edu/payment-plan/types.ts
@@ -0,0 +1,42 @@
+export const paymentPlanStatusOptions = [
+  { label: '待收', value: '0', elTagType: 'warning' },
+  { label: '已收', value: '1', elTagType: 'success' },
+  { label: '已作废', value: '4', elTagType: 'info' }
+];
+
+export interface PaymentPlanVO {
+  id: number | string;
+  contractId: number | string;
+  installmentNo: number;
+  planAmount: number;
+  planDate: string;
+  paidAmount: number;
+  paidDate: string;
+  paymentMethod: string;
+  status: string;
+  remark: string;
+}
+
+/** 表单用: 新增/修改合同时携带的计划明细 */
+export interface PaymentPlanForm {
+  installmentNo: number;
+  planAmount: number;
+  planDate: string;
+}
+
+/** 修改单期计划载荷(匹配后端 EduPaymentPlanBo) */
+export interface EduPaymentPlanBoPayload {
+  id: number | string;
+  planAmount?: number;
+  planDate?: string;
+  remark?: string;
+}
+
+/** 收款确认表单 */
+export interface PaymentReceiveForm {
+  id: number | string;
+  paidAmount: number;
+  paymentMethod: string;
+  paidDate: string;
+  remark?: string;
+}