diff --git a/src/api/oa/erp/contractOrder/index.ts b/src/api/oa/erp/contractOrder/index.ts
index 3b404b3..e178fdf 100644
--- a/src/api/oa/erp/contractOrder/index.ts
+++ b/src/api/oa/erp/contractOrder/index.ts
@@ -77,12 +77,12 @@ export const getContractOrder = (projectId: string | number): AxiosPromise<Proje
 };
 
 /**
- * 查询合同订单采购物料列表
- * @param projectId
+ * 查询合同订单采购物料清单
+ * @param contractId 合同ID
  */
-export const getContractOrderPurchaseMaterialList = (projectId: string | number): AxiosPromise<ContractOrderPurchaseMaterialVO[]> => {
+export const getContractOrderPurchaseMaterialList = (contractId: string | number): AxiosPromise<ContractOrderPurchaseMaterialVO[]> => {
   return request({
-    url: '/oa/erp/contractOrder/purchaseMaterialList/' + projectId,
+    url: '/oa/erp/contractOrder/purchaseMaterialList/' + contractId,
     method: 'get'
   });
 };
diff --git a/src/views/oa/erp/orderLedger/index.vue b/src/views/oa/erp/orderLedger/index.vue
index 2f90dfd..9959e03 100644
--- a/src/views/oa/erp/orderLedger/index.vue
+++ b/src/views/oa/erp/orderLedger/index.vue
@@ -762,7 +762,14 @@ const loadOrderAndContract = async () => {
 };
 
 /**
- * 采购/采购物料清单按 erp_project_purchase.project_id（实施项目）查询。
+ * 解析台账当前关联的合同ID（订单信息优先，合同详情兜底）。
+ */
+const resolveContractId = (): string | number | undefined => {
+  return orderInfo.value?.contractId ?? contractInfo.value?.contractId;
+};
+
+/**
+ * 采购单按 erp_project_purchase.project_id（实施项目）查询。
  * 台账路由参数为合同订单行时，需解析到关联的实施项目 ID，不能直接用路由上的合同订单 project_id。
  */
 const resolvePurchaseBizProjectId = async (): Promise<string | number | undefined> => {
@@ -797,26 +804,30 @@ const loadPurchaseList = async () => {
     purchaseMaterialList.value = [];
     return;
   }
-  const bizProjectId = await resolvePurchaseBizProjectId();
-  if (bizProjectId == null || bizProjectId === '') {
-    purchaseList.value = [];
-    purchaseTotal.value = 0;
-    purchaseMaterialList.value = [];
-    return;
-  }
-  purchaseQuery.projectId = bizProjectId;
-  purchaseQuery.relationId = undefined;
+
+  const contractId = resolveContractId();
   loadingPurchase.value = true;
   try {
-    const [purchaseRes, materialRes] = await Promise.all([
-      listProjectPurchase({
+    const bizProjectId = await resolvePurchaseBizProjectId();
+    if (bizProjectId != null && bizProjectId !== '') {
+      purchaseQuery.projectId = bizProjectId;
+      purchaseQuery.relationId = undefined;
+      const purchaseRes = await listProjectPurchase({
         ...purchaseQuery
-      }),
-      getContractOrderPurchaseMaterialList(bizProjectId)
-    ]);
-    purchaseList.value = purchaseRes.rows || [];
-    purchaseTotal.value = purchaseRes.total || 0;
-    purchaseMaterialList.value = materialRes.data || [];
+      });
+      purchaseList.value = purchaseRes.rows || [];
+      purchaseTotal.value = purchaseRes.total || 0;
+    } else {
+      purchaseList.value = [];
+      purchaseTotal.value = 0;
+    }
+
+    if (contractId != null && contractId !== '') {
+      const materialRes = await getContractOrderPurchaseMaterialList(contractId);
+      purchaseMaterialList.value = materialRes.data || [];
+    } else {
+      purchaseMaterialList.value = [];
+    }
   } finally {
     loadingPurchase.value = false;
   }