diff --git a/src/user/ticket/index.tsx b/src/user/ticket/index.tsx
index 6b854bb..4e6a374 100644
--- a/src/user/ticket/index.tsx
+++ b/src/user/ticket/index.tsx
@@ -37,6 +37,7 @@ const UserTicketList = () => {
   const [orderHasMore, setOrderHasMore] = useState(true);
   const [orderPage, setOrderPage] = useState(1);
   const [orderTotal, setOrderTotal] = useState(0);
+  const [orderCancelLoadingById, setOrderCancelLoadingById] = useState<Record<number, boolean>>({});
 
   const [activeTab, setActiveTab] = useState<'ticket' | 'order'>(() => {
     const tab = Taro.getCurrentInstance().router?.params?.tab
@@ -320,40 +321,85 @@ const UserTicketList = () => {
     return Number.isFinite(computed) ? computed : 0;
   };
 
+  const getTicketUsedQty = (t?: Partial<GltUserTicket> | null) => {
+    if (!t) return 0;
+    const anyT: any = t;
+    const raw = anyT.usedQty ?? anyT.usedNum ?? anyT.usedCount;
+    const n = Number(raw);
+    return Number.isFinite(n) ? n : 0;
+  };
+
   const rollbackUserTicketAfterOrderCancel = async (order: GltTicketOrder, before?: GltUserTicket | null) => {
+    const orderId = Number(order?.id);
     const ticketId = Number(order?.userTicketId);
     const qty = Math.max(0, Math.floor(Number((order as any)?.totalNum ?? 0)));
+    if (!Number.isFinite(orderId) || orderId <= 0) return;
     if (!Number.isFinite(ticketId) || ticketId <= 0) return;
     if (!Number.isFinite(qty) || qty <= 0) return;
 
+    const rollbackKey = `glt_ticket_order_rollback:${orderId}`;
+    if (Taro.getStorageSync(rollbackKey)) return;
+
     const after = await getGltUserTicket(ticketId);
     if (!after?.id) return;
 
     const beforeAvail = before ? getTicketAvailableQty(before) : undefined;
     const afterAvail = getTicketAvailableQty(after);
+    const beforeUsed = before ? getTicketUsedQty(before) : undefined;
+    const afterUsed = getTicketUsedQty(after);
 
-    let need = qty;
+    let needAvail = qty;
     if (typeof beforeAvail === 'number') {
       const delta = afterAvail - beforeAvail;
-      if (delta >= qty) return; // backend already rolled back
-      if (delta > 0) need = Math.max(0, qty - delta);
+      if (delta >= qty) {
+        Taro.setStorageSync(rollbackKey, Date.now());
+        return; // backend already rolled back
+      }
+      if (delta > 0) needAvail = Math.max(0, qty - delta);
+    }
+    let needUsed = qty;
+    if (typeof beforeUsed === 'number') {
+      const delta = beforeUsed - afterUsed;
+      if (delta >= qty) {
+        needUsed = 0; // backend already rolled back used qty
+      } else if (delta > 0) {
+        needUsed = Math.max(0, qty - delta);
+      }
+    }
+
+    if (needAvail <= 0 && needUsed <= 0) {
+      Taro.setStorageSync(rollbackKey, Date.now());
+      return;
     }
-    if (need <= 0) return;
 
     const currentAvailRaw = Number((after as any)?.availableQty);
     const baseAvail = Number.isFinite(currentAvailRaw) ? currentAvailRaw : afterAvail;
-    const nextAvail = (Number.isFinite(baseAvail) ? baseAvail : 0) + need;
+    const safeBaseAvail = Number.isFinite(baseAvail) ? baseAvail : 0;
 
+    const totalRaw = Number((after as any)?.totalQty ?? 0);
+    const total = Number.isFinite(totalRaw) ? totalRaw : undefined;
     const frozenRaw = Number((after as any)?.frozenQty ?? 0);
     const frozen = Number.isFinite(frozenRaw) ? frozenRaw : 0;
-    const reduceFrozen = Math.min(frozen, need);
-    const nextFrozen = reduceFrozen > 0 ? Math.max(0, frozen - reduceFrozen) : undefined;
+
+    const currentUsedRaw = Number((after as any)?.usedQty);
+    const baseUsed = Number.isFinite(currentUsedRaw) ? currentUsedRaw : afterUsed;
+    const safeBaseUsed = Number.isFinite(baseUsed) ? baseUsed : 0;
+    let nextUsed = safeBaseUsed - needUsed;
+    if (nextUsed < 0) nextUsed = 0;
+
+    const maxAvail = typeof total === 'number' ? Math.max(0, total - frozen - nextUsed) : undefined;
+
+    let nextAvail = safeBaseAvail + needAvail;
+    if (typeof maxAvail === 'number' && Number.isFinite(maxAvail) && nextAvail > maxAvail) nextAvail = maxAvail;
+    if (nextAvail < 0) nextAvail = 0;
 
     await updateGltUserTicket({
       ...after,
       availableQty: nextAvail,
-      ...(nextFrozen !== undefined ? { frozenQty: nextFrozen } : {})
+      usedQty: nextUsed
     });
+
+    Taro.setStorageSync(rollbackKey, Date.now());
   };
 
   // Allow users to modify/cancel before delivery starts (e.g. 待派单 / 待配送).
@@ -391,6 +437,7 @@ const UserTicketList = () => {
       Taro.showToast({ title: '仅配送未开始的订单可取消', icon: 'none' });
       return;
     }
+    if (orderCancelLoadingById[order.id]) return;
 
     const modal = await Taro.showModal({
       title: '取消订单',
@@ -400,6 +447,7 @@ const UserTicketList = () => {
     if (!modal.confirm) return;
 
     try {
+      setOrderCancelLoadingById((prev) => ({ ...prev, [order.id as number]: true }));
       Taro.showLoading({ title: '取消中...' });
       let beforeTicket: GltUserTicket | null = null;
       if (order.userTicketId) {
@@ -427,6 +475,7 @@ const UserTicketList = () => {
       Taro.showToast({ title: '取消失败，请重试', icon: 'none' });
     } finally {
       Taro.hideLoading();
+      setOrderCancelLoadingById((prev) => ({ ...prev, [order.id as number]: false }));
     }
   };
 
@@ -703,7 +752,10 @@ const UserTicketList = () => {
                       <View className="mt-3 flex justify-end gap-2">
                         <Button
                           size="small"
-                          disabled={!isTicketOrderPendingDelivery(item)}
+                          disabled={
+                            !isTicketOrderPendingDelivery(item) ||
+                            !!orderCancelLoadingById[item.id as number]
+                          }
                           onClick={(e) => {
                             e.stopPropagation();
                             void handleOrderModify(item);
@@ -714,7 +766,10 @@ const UserTicketList = () => {
                         <Button
                           size="small"
                           type="danger"
-                          disabled={!isTicketOrderPendingDelivery(item)}
+                          disabled={
+                            !isTicketOrderPendingDelivery(item) ||
+                            !!orderCancelLoadingById[item.id as number]
+                          }
                           onClick={(e) => {
                             e.stopPropagation();
                             void handleOrderCancel(item);