diff --git a/apps/backend/src/repositories/worker-platform/types.ts b/apps/backend/src/repositories/worker-platform/types.ts
index 6c26dec7..7d058673 100644
--- a/apps/backend/src/repositories/worker-platform/types.ts
+++ b/apps/backend/src/repositories/worker-platform/types.ts
@@ -382,6 +382,12 @@ export type WorkOrderRow = {
   category_name?: string
   worker_username?: string
   worker_display_name?: string
+  /** 取消信息，由工单查询从取消类事件推导，仅已取消工单有值。 */
+  cancel_reason?: string | null
+  cancel_event_type?: string | null
+  cancel_actor_type?: string | null
+  cancel_actor_id?: string | null
+  cancelled_at?: string | null
 }
 
 export type ProblemWorkOrderResolutionAction =
diff --git a/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts b/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
index a2b0d9a7..5e9012f1 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
@@ -12,10 +12,43 @@ export const WORK_ORDER_SELECT = `
     COALESCE(share_summary.pending_share_count, 0)::int AS pending_share_count,
     wc.name AS category_name,
     wu.username AS worker_username,
-    wu.display_name AS worker_display_name
+    wu.display_name AS worker_display_name,
+    cancel_info.cancel_reason,
+    cancel_info.cancel_event_type,
+    cancel_info.cancel_actor_type,
+    cancel_info.cancel_actor_id,
+    cancel_info.cancelled_at
   FROM work_orders wo
   LEFT JOIN work_categories wc ON wc.id = wo.category_id
   LEFT JOIN worker_users wu ON wu.id = wo.assigned_worker_id
+  LEFT JOIN LATERAL (
+    SELECT
+      ev.event_type AS cancel_event_type,
+      ev.actor_type AS cancel_actor_type,
+      ev.actor_id AS cancel_actor_id,
+      ev.created_at AS cancelled_at,
+      BTRIM(COALESCE(
+        NULLIF(BTRIM(COALESCE(ev.payload_json->>'reason', '')), ''),
+        NULLIF(BTRIM(COALESCE(ev.payload_json->>'note', '')), ''),
+        CASE ev.event_type
+          WHEN 'timeout_cancel_release' THEN '任务超时未完成，系统自动取消并退还押金'
+          WHEN 'timeout_cancel_deduct' THEN '任务超时未完成，系统自动取消并扣除押金'
+          ELSE ''
+        END
+      )) AS cancel_reason
+    FROM work_order_events ev
+    WHERE ev.work_order_id = wo.id
+      AND wo.status = 'cancelled'
+      AND ev.event_type IN (
+        'cancelled_by_admin',
+        'problem_cancel_release',
+        'problem_cancel_deduct',
+        'timeout_cancel_release',
+        'timeout_cancel_deduct'
+      )
+    ORDER BY ev.id DESC
+    LIMIT 1
+  ) cancel_info ON TRUE
   LEFT JOIN LATERAL (
     SELECT
       SUM(wos.quantity) FILTER (WHERE wos.status != 'cancelled') AS active_share_quantity,
diff --git a/apps/backend/src/services/worker-platform/work-order-display-mappers.ts b/apps/backend/src/services/worker-platform/work-order-display-mappers.ts
index ccee2547..f28bf473 100644
--- a/apps/backend/src/services/worker-platform/work-order-display-mappers.ts
+++ b/apps/backend/src/services/worker-platform/work-order-display-mappers.ts
@@ -114,6 +114,15 @@ export function mapWorkOrderSharingWorkers(shares: WorkOrderShareRow[]) {
   return [...workers.values()]
 }
 
+/** 取消来源：由触发取消的事件类型推导，用于列表与详情展示。 */
+function resolveWorkOrderCancelSource(cancelEventType: string | null | undefined) {
+  const eventType = String(cancelEventType || '').trim()
+  if (eventType === 'cancelled_by_admin') return '后台撤单'
+  if (eventType.startsWith('problem_')) return '问题单处置'
+  if (eventType.startsWith('timeout_')) return '超时自动取消'
+  return eventType || '未知来源'
+}
+
 export function mapWorkOrderAdmin(workOrder: WorkOrderRow, shares?: WorkOrderShareRow[]) {
   const activeShareQuantity = Math.max(0, Number(workOrder.active_share_quantity || 0))
   const pendingShareCount = Math.max(0, Number(workOrder.pending_share_count || 0))
@@ -232,6 +241,16 @@ export function mapWorkOrderAdmin(workOrder: WorkOrderRow, shares?: WorkOrderSha
     acceptance: mapAcceptanceForResponse(workOrder.acceptance_json),
     draftAcceptance: mapAcceptanceForResponse(workOrder.draft_acceptance_json),
     problemNote: workOrder.problem_note || '',
+    cancel:
+      workOrder.status === WORK_ORDER_STATUS.CANCELLED
+        ? {
+            reason: String(workOrder.cancel_reason || ''),
+            source: resolveWorkOrderCancelSource(workOrder.cancel_event_type),
+            actorType: String(workOrder.cancel_actor_type || ''),
+            actorName: String(workOrder.cancel_actor_id || ''),
+            cancelledAt: workOrder.cancelled_at || null,
+          }
+        : null,
     worker: workOrder.assigned_worker_id
       ? {
           workerId: Number(workOrder.assigned_worker_id),
diff --git a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
index de4483fb..8b2675f5 100644
--- a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
@@ -896,21 +896,34 @@ export default function WorkOrdersPanel() {
       title: '状态',
       width: 150,
       render: (_, row) => {
+        const cancelText =
+          row.cancel?.reason || (row.cancel ? `${row.cancel.source}（未记录原因）` : '')
         return (
-          <Space wrap size={4}>
-            <Tag color={resolveStatusColor(row.status)}>{formatStatus(row.status)}</Tag>
-            {row.rawStatus === 'open' && row.pinnedAt ? (
-              <Tag color="gold" icon={<PushpinOutlined />}>
-                置顶
-              </Tag>
+          <div className="cell-stack">
+            <Space wrap size={4}>
+              <Tag color={resolveStatusColor(row.status)}>{formatStatus(row.status)}</Tag>
+              {row.rawStatus === 'open' && row.pinnedAt ? (
+                <Tag color="gold" icon={<PushpinOutlined />}>
+                  置顶
+                </Tag>
+              ) : null}
+              {row.acceptanceMode === 'friend_gift' ? <Tag color="purple">好友赠送</Tag> : null}
+              {row.acceptanceMode === 'friend_gift' && row.gift ? (
+                <Tag color={resolveGiftPhaseColor(row.gift.phase)}>
+                  {formatGiftPhase(row.gift.phase)}
+                </Tag>
+              ) : null}
+            </Space>
+            {row.cancel ? (
+              <Typography.Text
+                type="secondary"
+                style={{ fontSize: 12, maxWidth: 140 }}
+                ellipsis={{ tooltip: `${row.cancel.source}：${cancelText}` }}
+              >
+                {cancelText}
+              </Typography.Text>
             ) : null}
-            {row.acceptanceMode === 'friend_gift' ? <Tag color="purple">好友赠送</Tag> : null}
-            {row.acceptanceMode === 'friend_gift' && row.gift ? (
-              <Tag color={resolveGiftPhaseColor(row.gift.phase)}>
-                {formatGiftPhase(row.gift.phase)}
-              </Tag>
-            ) : null}
-          </Space>
+          </div>
         )
       },
     },
@@ -1418,6 +1431,22 @@ export default function WorkOrdersPanel() {
                     {String(detailOrder.problemNote || '').trim() || '-'}
                   </span>
                 </Descriptions.Item>
+                {detailOrder.cancel ? (
+                  <Descriptions.Item label="取消信息" span={2}>
+                    <span className="worker-order-detail-value">
+                      {detailOrder.cancel.source}
+                      {detailOrder.cancel.cancelledAt
+                        ? ` · ${formatAdminDateTime(detailOrder.cancel.cancelledAt)}`
+                        : ''}
+                      {detailOrder.cancel.actorType === 'admin' && detailOrder.cancel.actorName
+                        ? ` · 操作人 ${detailOrder.cancel.actorName}`
+                        : ''}
+                      {detailOrder.cancel.reason
+                        ? ` · 原因：${detailOrder.cancel.reason}`
+                        : ' · 原因未记录'}
+                    </span>
+                  </Descriptions.Item>
+                ) : null}
               </Descriptions>
             </Card>
 
diff --git a/apps/frontend/src/types/worker-platform.ts b/apps/frontend/src/types/worker-platform.ts
index de9ccad6..ec1088bc 100644
--- a/apps/frontend/src/types/worker-platform.ts
+++ b/apps/frontend/src/types/worker-platform.ts
@@ -548,6 +548,14 @@ export type WorkOrder = {
   /** 打手本人尚未点击查看或操作过该工单。 */
   isUnread?: boolean
   problemNote: string
+  /** 取消信息，仅已取消工单返回。 */
+  cancel?: {
+    reason: string
+    source: string
+    actorType: string
+    actorName: string
+    cancelledAt: string | null
+  } | null
   worker: null | {
     workerId: number
     username: string