diff --git a/src/api/oa/erp/projectInfo/index.ts b/src/api/oa/erp/projectInfo/index.ts
index c2b87a1..5c5030f 100644
--- a/src/api/oa/erp/projectInfo/index.ts
+++ b/src/api/oa/erp/projectInfo/index.ts
@@ -101,3 +101,14 @@ export function getErpProjectWithContractList(query) {
   });
 }
 
+/**
+ * 根据合同ID查询关联项目信息列表
+ * @param contractId
+ */
+export const listProjectInfoByContractId = (contractId: string | number): AxiosPromise<ProjectInfoVO[]> => {
+  return request({
+    url: '/oa/erp/projectInfo/listByContractId/' + contractId,
+    method: 'get'
+  });
+};
+
diff --git a/src/api/oa/erp/projectPurchase/index.ts b/src/api/oa/erp/projectPurchase/index.ts
index 822c340..1d173b3 100644
--- a/src/api/oa/erp/projectPurchase/index.ts
+++ b/src/api/oa/erp/projectPurchase/index.ts
@@ -3,6 +3,11 @@ import { AxiosPromise } from 'axios';
 import { ProjectPurchaseVO, ProjectPurchaseForm, ProjectPurchaseQuery } from '@/api/oa/erp/projectPurchase/types';
 import { ProjectPurchaseMaterialVO } from '@/api/oa/erp/projectPurchaseMaterial/types';
 
+export interface ProjectMaterialsSourceDTO {
+  relationId?: string | number;
+  materialList?: ProjectPurchaseMaterialVO[];
+}
+
 /**
  * 查询项目采购信息列表
  * @param query
@@ -93,9 +98,14 @@ export function getErpProjectPurchaseList (query) {
  * @param projectId
  * @param spareFlag
  */
-export const getProjectMaterialsByProjectId = (projectId: string | number, spareFlag: string): AxiosPromise<ProjectPurchaseMaterialVO[]> => {
+export const getProjectMaterialsByProjectId = (
+  projectId: string | number,
+  spareFlag: string,
+  contractId?: string | number
+): AxiosPromise<ProjectMaterialsSourceDTO> => {
   return request({
     url: `/oa/erp/projectPurchase/getContractMaterialsByProjectId/${projectId}/${spareFlag}`,
-    method: 'get'
+    method: 'get',
+    params: contractId ? { contractId } : {}
   });
 };
diff --git a/src/router/index.ts b/src/router/index.ts
index 76cc1a8..bd67bc8 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -145,7 +145,7 @@ export const constantRoutes: RouteRecordRaw[] = [
         path: 'orderLedger/:projectId',
         component: () => import('@/views/oa/erp/orderLedger/index.vue'),
         name: 'OrderLedger',
-        meta: { title: '订单管理台账', activeMenu: '/contract/contractInfo/contractOrder' }
+        meta: { title: '合同订单台账', activeMenu: '/contract/contractInfo/contractOrder' }
       }
     ]
   },
diff --git a/src/views/oa/erp/orderLedger/index.vue b/src/views/oa/erp/orderLedger/index.vue
index afc853a..b705fd8 100644
--- a/src/views/oa/erp/orderLedger/index.vue
+++ b/src/views/oa/erp/orderLedger/index.vue
@@ -3,7 +3,7 @@
     <el-card shadow="never" class="main-card">
       <template #header>
         <div class="card-header">
-          <span class="header-title">合同订单管理台账</span>
+          <span class="header-title">合同订单台账</span>
           <el-button size="default" type="primary" icon="ArrowLeft" @click="handleBack">返回</el-button>
         </div>
       </template>
@@ -80,6 +80,7 @@
                 <el-tag v-if="purchaseTotal > 0" type="info" size="small" class="count-tag"> {{ purchaseTotal }} 条 </el-tag>
               </div>
               <div class="header-actions">
+                <el-button size="default" type="primary" icon="Plus" @click="addPurchaseFromLedger">新增采购</el-button>
                 <el-button size="default" type="primary" plain icon="Link" @click="openPurchasePage">前往采购页面</el-button>
                 <el-button size="default" icon="Refresh" @click="loadPurchaseList">刷新</el-button>
               </div>
@@ -358,7 +359,13 @@ const loadingInvoice = ref(false);
 const shippingTotal = ref(0);
 const shippingQuery = reactive({ pageNum: 1, pageSize: 10 });
 const purchaseTotal = ref(0);
-const purchaseQuery = reactive({ pageNum: 1, pageSize: 10, projectId: undefined as string | number | undefined });
+const purchaseQuery = reactive({
+  pageNum: 1,
+  pageSize: 10,
+  projectId: undefined as string | number | undefined,
+  relationId: undefined as string | number | undefined,
+  spareFlag: undefined as string | undefined
+});
 const invoiceTotal = ref(0);
 const invoiceQuery = reactive({ pageNum: 1, pageSize: 10, projectId: undefined as string | number | undefined, contractId: undefined as string | number | undefined });
 
@@ -392,6 +399,20 @@ const viewPurchase = (row: ProjectPurchaseVO) => {
   });
 };
 
+/** 从台账新增采购，并携带项目信息 */
+const addPurchaseFromLedger = () => {
+  const contractId = orderInfo.value?.contractId ?? contractInfo.value?.contractId;
+  if (!contractId) {
+    proxy?.$modal.msgWarning('合同信息未加载完成，请稍后重试');
+    return;
+  }
+  proxy?.$tab.openPage('/purchase/projectPurchase/edit', '采购信息', {
+    type: 'add',
+    source: 'orderLedger',
+    contractId
+  });
+};
+
 /** 查看开票信息 */
 const viewInvoice = (row: FinInvoiceInfoVO) => {
   if (!row?.invoiceId) return;
@@ -421,16 +442,18 @@ const loadOrderAndContract = async () => {
 
 /** 加载采购信息 */
 const loadPurchaseList = async () => {
-  if (!projectId.value) {
+  const contractId = orderInfo.value.contractId;
+  if (!contractId && !projectId.value) {
     purchaseList.value = [];
     purchaseTotal.value = 0;
     return;
   }
+  // 优先按合同ID查询采购
+  purchaseQuery.relationId = contractId ? contractId : undefined;
   loadingPurchase.value = true;
   try {
     const res: any = await listProjectPurchase({
-      ...purchaseQuery,
-      projectId: projectId.value
+      ...purchaseQuery
     });
     purchaseList.value = res.rows || [];
     purchaseTotal.value = res.total || 0;
@@ -538,7 +561,6 @@ const handleTabChange = (tabName: string) => {
         break;
       case 'purchase':
         purchaseQuery.pageNum = 1;
-        purchaseQuery.projectId = projectId.value;
         loadPurchaseList();
         break;
       case 'shipping':
diff --git a/src/views/oa/erp/projectPurchase/edit.vue b/src/views/oa/erp/projectPurchase/edit.vue
index 8ac3b30..d12ca3c 100644
--- a/src/views/oa/erp/projectPurchase/edit.vue
+++ b/src/views/oa/erp/projectPurchase/edit.vue
@@ -323,6 +323,7 @@ import { useUserStore } from '@/store/modules/user';
 import { getBaseUnitInfoList } from '@/api/oa/base/unitInfo';
 import { getInfo } from '@/api/login';
 import type { MaterialInfoVO } from '@/api/oa/base/materialInfo/types';
+import { listProjectInfoByContractId } from '@/api/oa/erp/projectInfo';
 
 const { proxy } = getCurrentInstance() as ComponentInternalInstance;
 const router = useRouter();
@@ -394,14 +395,22 @@ const nonStandardMaterialList = computed(() => {
   return materialList.value.filter((item) => item.materialFlag === '2');
 });
 
-const loadProjectMaterialsFromSource = async (projectId?: string | number, spareFlag?: string) => {
+const loadProjectMaterialsFromSource = async (
+  projectId?: string | number,
+  spareFlag?: string,
+  contractId?: string | number
+) => {
   if (!projectId || !spareFlag) {
     return;
   }
   materialLoading.value = true;
   try {
-    const res = await getProjectMaterialsByProjectId(projectId, spareFlag);
-    let data = res?.data || [];
+    const res = await getProjectMaterialsByProjectId(projectId, spareFlag, contractId);
+    const relationId = res?.data?.relationId;
+    if (relationId !== undefined && relationId !== null) {
+      form.value.relationId = relationId as any;
+    }
+    let data = res?.data?.materialList || [];
     data = data.map((item, index) => ({
       ...item,
       purchasePlanFlag: '1',
@@ -790,6 +799,38 @@ const projectInfoSelectCallBack = (data: ProjectInfoVO[]) => {
   }
 };
 
+const initFromRouteQuery = async () => {
+  const queryType = (routeParams.type as string) || 'add';
+  const contractId = routeParams.contractId as string | number | undefined;
+  if (
+    routeParams.id ||
+    queryType !== 'add' ||
+    (routeParams.source as string) !== 'orderLedger' ||
+    !contractId
+  ) {
+    return;
+  }
+  const res = await listProjectInfoByContractId(contractId);
+  const projectList = res?.data || [];
+  if (!projectList.length) {
+    proxy?.$modal.msgWarning('该合同未查询到关联系项目信息');
+    return;
+  }
+  if (projectList.length > 1) {
+    proxy?.$modal.msgWarning('该合同关联了多个项目，系统将默认带出第一个项目，请确认后再提交');
+  }
+  const project = projectList[0];
+  form.value.projectId = project.projectId;
+  form.value.projectCode = project.projectCode;
+  form.value.projectName = project.projectName;
+  form.value.managerId = project.managerId;
+  form.value.chargeId = project.chargeId;
+  form.value.deputyId = project.deputyId;
+  form.value.deptId = project.deptId;
+  form.value.spareFlag = project.spareFlag;
+  await loadProjectMaterialsFromSource(project.projectId as string | number, project.spareFlag, contractId);
+};
+
 const handleExportSingle = () => {
   proxy?.download(
     `oa/erp/projectPurchase/exportSingle/${form.value.projectPurchaseId}`,
@@ -821,7 +862,13 @@ onMounted(async () => {
       userRoles.value = [];
     }
     const shouldLoadDetail = !!id && (type === 'update' || type === 'view' || type === 'approval');
-    await loadDetail(shouldLoadDetail ? (id as string | number) : undefined);
+    if (shouldLoadDetail) {
+      await loadDetail(id as string | number);
+    } else {
+      resetForm();
+      materialList.value = [];
+      await initFromRouteQuery();
+    }
     pageLoading.value = false;
   });
 });