diff --git a/apps/frontend/src/App.vue b/apps/frontend/src/App.vue
index 9412d92..b4847f2 100644
--- a/apps/frontend/src/App.vue
+++ b/apps/frontend/src/App.vue
@@ -11,7 +11,7 @@ const showAppShell = computed(() => !route.path.startsWith('/auth'));
 <template>
   <div class="min-h-screen bg-gray-100 text-gray-900">
     <div
-      class="max-w-sm mx-auto min-h-screen relative w-full"
+      class="mx-auto min-h-screen relative w-full max-w-full"
       :class="showAppShell ? 'pb-24' : 'pb-0'"
     >
       <RouterView />
diff --git a/apps/frontend/src/components/navigation/BottomTabBar.vue b/apps/frontend/src/components/navigation/BottomTabBar.vue
index 933bed1..c9ed725 100644
--- a/apps/frontend/src/components/navigation/BottomTabBar.vue
+++ b/apps/frontend/src/components/navigation/BottomTabBar.vue
@@ -14,7 +14,7 @@ const tabs = [
 
 <template>
   <nav class="fixed bottom-0 left-0 right-0 bg-white border-t border-gray-200 safe-area-bottom">
-    <div class="max-w-sm mx-auto flex justify-around items-center h-16 px-4 w-full">
+    <div class="mx-auto flex justify-around items-center h-16 px-4 w-full max-w-full">
       <RouterLink
         v-for="tab in tabs"
         :key="tab.name"
diff --git a/apps/frontend/src/components/transactions/TransactionItem.vue b/apps/frontend/src/components/transactions/TransactionItem.vue
index d3d8cd7..0f130ae 100644
--- a/apps/frontend/src/components/transactions/TransactionItem.vue
+++ b/apps/frontend/src/components/transactions/TransactionItem.vue
@@ -54,12 +54,12 @@ const sourceLabel = computed(() => {
     <div class="w-12 h-12 bg-gray-100 rounded-xl flex items-center justify-center">
       <LucideIcon :name="iconName" class="text-indigo-500" :size="24" />
     </div>
-    <div class="flex-1 space-y-1">
-      <div class="flex items-center justify-between">
-        <p class="font-semibold text-gray-800">{{ transaction.title }}</p>
-        <span class="text-[10px] uppercase tracking-wide text-gray-400">{{ transaction.currency }}</span>
+    <div class="flex-1 min-w-0 space-y-1">
+      <div class="flex items-center justify-between space-x-2">
+        <p class="font-semibold text-gray-800 truncate">{{ transaction.title }}</p>
+        <span class="shrink-0 text-[10px] uppercase tracking-wide text-gray-400">{{ transaction.currency }}</span>
       </div>
-      <p class="text-sm text-gray-500">{{ transaction.category }} · {{ sourceLabel }}</p>
+      <p class="text-sm text-gray-500 truncate">{{ transaction.category }} · {{ sourceLabel }}</p>
       <p v-if="transaction.notes" class="text-xs text-gray-400 truncate">{{ transaction.notes }}</p>
       <div class="mt-1">
         <span class="text-xs px-2 py-0.5 rounded-full" :class="statusColor">{{ transaction.status }}</span>
diff --git a/apps/frontend/src/composables/useTransaction.ts b/apps/frontend/src/composables/useTransaction.ts
new file mode 100644
index 0000000..d318730
--- /dev/null
+++ b/apps/frontend/src/composables/useTransaction.ts
@@ -0,0 +1,43 @@
+import { useQuery, useQueryClient } from '@tanstack/vue-query';
+import { apiClient } from '../lib/api/client';
+import type { Transaction } from '../types/transaction';
+import { computed, type ComputedRef } from 'vue';
+
+const mapTransaction = (raw: any): Transaction => ({
+  id: raw.id,
+  title: raw.title,
+  description: raw.description ?? raw.notes ?? undefined,
+  icon: raw.icon,
+  amount: Number(raw.amount ?? 0),
+  currency: raw.currency ?? 'CNY',
+  category: raw.category ?? '未分类',
+  type: raw.type ?? 'expense',
+  source: raw.source ?? 'manual',
+  occurredAt: raw.occurredAt,
+  status: raw.status ?? 'pending',
+  notes: raw.notes,
+  metadata: raw.metadata ?? undefined,
+  userId: raw.userId ?? undefined,
+  createdAt: raw.createdAt,
+  updatedAt: raw.updatedAt
+});
+
+export function useTransactionQuery(id: string | ComputedRef<string | undefined>) {
+  const queryClient = useQueryClient();
+  const txId = computed(() => (typeof id === 'string' ? id : id.value) ?? '');
+
+  return useQuery<Transaction | undefined>({
+    queryKey: ['transactions', txId],
+    enabled: computed(() => Boolean(txId.value)).value,
+    initialData: () => {
+      const list = queryClient.getQueryData<Transaction[]>(['transactions']);
+      return list?.find((t) => t.id === txId.value);
+    },
+    queryFn: async () => {
+      const { data } = await apiClient.get(`/transactions/${txId.value}`);
+      return mapTransaction(data.data);
+    },
+    staleTime: 60_000
+  });
+}
+
diff --git a/apps/frontend/src/features/transactions/pages/TransactionDetailPage.vue b/apps/frontend/src/features/transactions/pages/TransactionDetailPage.vue
new file mode 100644
index 0000000..fbb3417
--- /dev/null
+++ b/apps/frontend/src/features/transactions/pages/TransactionDetailPage.vue
@@ -0,0 +1,73 @@
+<script setup lang="ts">
+import { computed } from 'vue';
+import { useRoute, useRouter } from 'vue-router';
+import LucideIcon from '../../../components/common/LucideIcon.vue';
+import { useTransactionQuery } from '../../../composables/useTransaction';
+
+const route = useRoute();
+const router = useRouter();
+const id = computed(() => route.params.id as string);
+
+const query = useTransactionQuery(id);
+const txn = computed(() => query.data.value);
+
+const goBack = () => router.back();
+</script>
+
+<template>
+  <div class="p-6 pt-10 pb-24 space-y-6">
+    <header class="flex items-center space-x-3">
+      <button class="p-2 rounded-xl bg-white border border-gray-200" @click="goBack">
+        <LucideIcon name="chevron-left" :size="20" />
+      </button>
+      <h1 class="text-2xl font-bold text-gray-900">账单详情</h1>
+    </header>
+
+    <div v-if="query.isLoading.value" class="flex justify-center py-16">
+      <svg class="w-8 h-8 animate-spin text-indigo-500" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+        <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4" />
+        <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v4a4 4 0 00-4 4H4z" />
+      </svg>
+    </div>
+
+    <div v-else-if="!txn" class="text-center text-gray-400 py-20">
+      未找到该账单
+    </div>
+
+    <div v-else class="space-y-6">
+      <div class="bg-white rounded-2xl p-6 border border-gray-100">
+        <div class="flex items-start justify-between">
+          <div>
+            <p class="text-gray-500 text-sm">{{ txn.category }} · {{ txn.currency }}</p>
+            <h2 class="text-3xl font-semibold mt-1" :class="txn.type === 'income' ? 'text-emerald-600' : 'text-red-600'">
+              {{ txn.type === 'income' ? '+' : '-' }}¥ {{ Number(txn.amount).toFixed(2) }}
+            </h2>
+          </div>
+          <div class="w-12 h-12 bg-gray-100 rounded-xl flex items-center justify-center">
+            <LucideIcon :name="txn.icon || (txn.type === 'income' ? 'arrow-down-right' : 'arrow-up-right')" class="text-indigo-500" :size="24" />
+          </div>
+        </div>
+        <p class="mt-3 text-lg font-medium text-gray-900 truncate">{{ txn.title }}</p>
+        <p v-if="txn.notes" class="mt-1 text-sm text-gray-500 whitespace-pre-wrap">{{ txn.notes }}</p>
+      </div>
+
+      <div class="bg-white rounded-2xl p-6 border border-gray-100">
+        <h3 class="text-base font-semibold text-gray-900 mb-4">详细信息</h3>
+        <div class="space-y-3 text-sm">
+          <div class="flex justify-between"><span class="text-gray-500">类型</span><span class="text-gray-900">{{ txn.type === 'income' ? '收入' : '支出' }}</span></div>
+          <div class="flex justify-between"><span class="text-gray-500">来源</span><span class="text-gray-900">{{ txn.source }}</span></div>
+          <div class="flex justify-between"><span class="text-gray-500">状态</span><span class="text-gray-900 capitalize">{{ txn.status }}</span></div>
+          <div class="flex justify-between"><span class="text-gray-500">发生时间</span><span class="text-gray-900">{{ new Date(txn.occurredAt).toLocaleString('zh-CN') }}</span></div>
+          <div v-if="txn.createdAt" class="flex justify-between"><span class="text-gray-500">创建时间</span><span class="text-gray-900">{{ new Date(txn.createdAt).toLocaleString('zh-CN') }}</span></div>
+          <div v-if="txn.updatedAt" class="flex justify-between"><span class="text-gray-500">更新时间</span><span class="text-gray-900">{{ new Date(txn.updatedAt).toLocaleString('zh-CN') }}</span></div>
+        </div>
+      </div>
+
+      <div v-if="txn.metadata && Object.keys(txn.metadata).length" class="bg-white rounded-2xl p-6 border border-gray-100">
+        <h3 class="text-base font-semibold text-gray-900 mb-4">关联信息</h3>
+        <pre class="text-xs text-gray-600 overflow-x-auto">{{ JSON.stringify(txn.metadata, null, 2) }}</pre>
+      </div>
+    </div>
+  </div>
+</template>
+
diff --git a/apps/frontend/src/features/transactions/pages/TransactionsPage.vue b/apps/frontend/src/features/transactions/pages/TransactionsPage.vue
index 976cf05..adf1b72 100644
--- a/apps/frontend/src/features/transactions/pages/TransactionsPage.vue
+++ b/apps/frontend/src/features/transactions/pages/TransactionsPage.vue
@@ -183,10 +183,16 @@ const refreshTransactions = async () => {
           :key="transaction.id"
           class="relative group"
         >
-          <TransactionItem :transaction="transaction" />
+          <RouterLink
+            class="block"
+            :to="{ name: 'transaction-detail', params: { id: transaction.id } }"
+          >
+            <TransactionItem :transaction="transaction" />
+          </RouterLink>
           <button
-            class="absolute top-4 right-4 opacity-0 group-hover:opacity-100 transition-opacity text-gray-400 hover:text-red-500"
-            @click="removeTransaction(transaction.id)"
+            class="absolute top-4 right-4 opacity-0 group-hover:opacity-100 transition-opacity text-gray-400 hover:text-red-500 z-10"
+            @click.stop="removeTransaction(transaction.id)"
+            aria-label="删除"
           >
             <LucideIcon name="trash-2" :size="18" />
           </button>
diff --git a/apps/frontend/src/router/index.ts b/apps/frontend/src/router/index.ts
index 96eebc3..6fac998 100644
--- a/apps/frontend/src/router/index.ts
+++ b/apps/frontend/src/router/index.ts
@@ -14,6 +14,12 @@ const routes: RouteRecordRaw[] = [
     component: () => import('../features/transactions/pages/TransactionsPage.vue'),
     meta: { title: '交易记录', requiresAuth: true }
   },
+  {
+    path: '/transactions/:id',
+    name: 'transaction-detail',
+    component: () => import('../features/transactions/pages/TransactionDetailPage.vue'),
+    meta: { title: '账单详情', requiresAuth: true }
+  },
   {
     path: '/analysis',
     name: 'analysis',