diff --git a/apps/backend/src/services/admin/admin-read-service.ts b/apps/backend/src/services/admin/admin-read-service.ts
index 7f6a968c..dea8c153 100644
--- a/apps/backend/src/services/admin/admin-read-service.ts
+++ b/apps/backend/src/services/admin/admin-read-service.ts
@@ -63,6 +63,10 @@ import type {
   AdminTaskListQueryInput,
   AdminViewerSessionInput,
 } from '../../types/admin/read-inputs.js'
+import type {
+  KuaishouIndustryVoucherRow,
+  TaskRow,
+} from '../../types/repository/rows.js'
 
 type JsonRecord = Record<string, any>
 
@@ -220,11 +224,14 @@ export async function getAdminTaskDetail(
   }
 
   const primaryClaimTokenId = getTaskPrimaryClaimTokenId(task)
-  const [order, claimToken, taskEvents, taskKuaishouIndustryVouchers] = await Promise.all([
+  const [order, claimToken, taskEvents, taskKuaishouIndustryVouchers, oidKuaishouIndustryVouchers] = await Promise.all([
     getOrderById(task.order_id),
     primaryClaimTokenId ? getClaimTokenById(primaryClaimTokenId) : Promise.resolve(null),
     listTaskEventsByTaskId(task.id),
     listKuaishouIndustryVouchersByTaskId(task.id),
+    task.platform_order_id
+      ? listKuaishouIndustryVouchersByOid(task.platform_order_id)
+      : Promise.resolve([]),
   ])
   const orderItems = order ? await listOrderItemsByOrderId(order.id) : []
   const orderItem = orderItems.find((item) => item.id === task.order_item_id) || null
@@ -241,7 +248,12 @@ export async function getAdminTaskDetail(
     mapKuaishouCloudFulfillmentContext(taskContext.kuaishouCloudFulfillment, {
       cloudSourceLabelMap,
     }) || mapKuaishouCloudTaskStateProjection(task, { cloudSourceLabelMap })
-  const firstKuaishouIndustryVoucher = taskKuaishouIndustryVouchers[0] || null
+  const firstKuaishouIndustryVoucher = resolveKuaishouIndustryVoucherForTask(
+    task,
+    taskContext,
+    taskKuaishouIndustryVouchers,
+    oidKuaishouIndustryVouchers,
+  )
   const kuaishouIndustryVoucher =
     firstKuaishouIndustryVoucher
       ? mapAdminKuaishouIndustryVoucher(firstKuaishouIndustryVoucher)
@@ -375,6 +387,46 @@ function mapKuaishouIndustryVoucherContext(value: unknown): JsonRecord | null {
   }
 }
 
+function resolveKuaishouIndustryVoucherForTask(
+  task: TaskRow,
+  taskContext: JsonRecord,
+  taskVouchers: KuaishouIndustryVoucherRow[],
+  oidVouchers: KuaishouIndustryVoucherRow[],
+): KuaishouIndustryVoucherRow | null {
+  const linkedVoucher = taskVouchers[0] || null
+  if (linkedVoucher) {
+    return linkedVoucher
+  }
+
+  const voucherContext =
+    taskContext.kuaishouIndustryVoucher &&
+    typeof taskContext.kuaishouIndustryVoucher === 'object' &&
+    !Array.isArray(taskContext.kuaishouIndustryVoucher)
+      ? taskContext.kuaishouIndustryVoucher as JsonRecord
+      : {}
+  const voucherCode = String(voucherContext.voucherCode || voucherContext.eticketId || '').trim()
+  if (voucherCode) {
+    const matchedByCode = oidVouchers.find(
+      (voucher) => String(voucher.voucher_code || '').trim() === voucherCode,
+    )
+    if (matchedByCode) {
+      return matchedByCode
+    }
+  }
+
+  const unitIndex = Number(task.unit_index || 0) || 0
+  if (unitIndex > 0) {
+    const matchedByUnit = oidVouchers.find(
+      (voucher) => Number(voucher.unit_index || 0) === unitIndex,
+    )
+    if (matchedByUnit) {
+      return matchedByUnit
+    }
+  }
+
+  return oidVouchers.length === 1 ? (oidVouchers[0] || null) : null
+}
+
 function buildCloudSourceLabelMap() {
   const labelMap = new Map<string, string>()
 
diff --git a/apps/backend/src/services/admin/write/kuaishou-cloud-actions.ts b/apps/backend/src/services/admin/write/kuaishou-cloud-actions.ts
index e55c16ae..b6dc1dcf 100644
--- a/apps/backend/src/services/admin/write/kuaishou-cloud-actions.ts
+++ b/apps/backend/src/services/admin/write/kuaishou-cloud-actions.ts
@@ -969,6 +969,30 @@ async function getRequiredIndustryVoucherForTask(task: TaskRow): Promise<Kuaisho
     }
   }
 
+  const oidVouchers = await resolveIndustryVouchersForOrder(task.platform_order_id)
+  if (voucherCode) {
+    const matchedByCode = oidVouchers.find(
+      (voucher) => String(voucher.voucher_code || '').trim() === voucherCode,
+    )
+    if (matchedByCode) {
+      return matchedByCode
+    }
+  }
+
+  const unitIndex = Number(task.unit_index || 0) || 0
+  if (unitIndex > 0) {
+    const matchedByUnit = oidVouchers.find(
+      (voucher) => Number(voucher.unit_index || 0) === unitIndex,
+    )
+    if (matchedByUnit) {
+      return matchedByUnit
+    }
+  }
+
+  if (oidVouchers.length === 1 && oidVouchers[0]) {
+    return oidVouchers[0]
+  }
+
   throw createHttpError('当前任务没有关联电子凭证，无法执行该操作', {
     statusCode: 409,
     errorCode: 'admin_task_kuaishou_industry_voucher_missing',