diff --git a/server/app/common/service/crypto/CryptoMarketService.php b/server/app/common/service/crypto/CryptoMarketService.php
index 234b470..7ff2dd4 100644
--- a/server/app/common/service/crypto/CryptoMarketService.php
+++ b/server/app/common/service/crypto/CryptoMarketService.php
@@ -9,8 +9,8 @@ use think\facade\Log;
 
 class CryptoMarketService
 {
-    private const CACHE_KEY = 'crypto_market_snapshot';
-    private const STALE_CACHE_KEY = 'crypto_market_snapshot_stale';
+    private const CACHE_KEY = 'crypto_market_snapshot_usd';
+    private const STALE_CACHE_KEY = 'crypto_market_snapshot_usd_stale';
 
     public static function snapshot(): array
     {
@@ -60,7 +60,7 @@ class CryptoMarketService
         ), '/');
         $ids = array_column($coinConfig, 'id');
         $marketUrl = $apiBase . '/coins/markets?' . http_build_query([
-            'vs_currency' => 'cny',
+            'vs_currency' => 'usd',
             'ids' => implode(',', $ids),
             'order' => 'market_cap_desc',
             'per_page' => max(1, count($ids)),
@@ -109,7 +109,7 @@ class CryptoMarketService
             'stale' => false,
             'overview' => [
                 'btc_market_cap_percentage' => round((float) ($globalData['market_cap_percentage']['btc'] ?? 0), 1),
-                'total_volume_cny' => (float) ($globalData['total_volume']['cny'] ?? 0),
+                'total_volume_usd' => (float) ($globalData['total_volume']['usd'] ?? 0),
             ],
             'coins' => $coins,
         ];
diff --git a/uniapp/src/api/crypto.ts b/uniapp/src/api/crypto.ts
index 23205b9..241bd42 100644
--- a/uniapp/src/api/crypto.ts
+++ b/uniapp/src/api/crypto.ts
@@ -185,7 +185,7 @@ export interface CryptoMarketSnapshot {
     stale: boolean
     overview: {
         btc_market_cap_percentage: number
-        total_volume_cny: number
+        total_volume_usd: number
     }
     coins: CryptoMarketCoin[]
 }
diff --git a/uniapp/src/pages/crypto/crypto.vue b/uniapp/src/pages/crypto/crypto.vue
index d254ac3..fe68a16 100644
--- a/uniapp/src/pages/crypto/crypto.vue
+++ b/uniapp/src/pages/crypto/crypto.vue
@@ -101,8 +101,8 @@
                     </view>
 
                     <view class="coin-row__price">
-                        <text class="coin-row__price-value">{{ formatCnyPrice(coin.current_price) }}</text>
-                        <text class="coin-row__market-cap">{{ formatMarketCap(coin.market_cap) }}</text>
+                        <text class="coin-row__price-value">{{ formatUsdPrice(coin.current_price) }}</text>
+                        <text class="coin-row__market-cap">{{ formatUsdMarketCap(coin.market_cap) }}</text>
                     </view>
 
                     <view class="coin-row__badge" :class="changeClass(coin.price_change_percentage_24h)">
@@ -187,7 +187,7 @@ const displayCoins = computed(() => {
 })
 
 const btcShare = computed(() => `${btcMarketShare.value.toFixed(1)}%`)
-const totalVolumeText = computed(() => formatLargeCny(totalVolume.value))
+const totalVolumeText = computed(() => formatLargeUsd(totalVolume.value))
 const emptyTitle = computed(() => searchKey.value ? '没有匹配的币种' : '暂无自选币种')
 const emptyDesc = computed(() => searchKey.value ? '换个关键词试试' : '点击行情右侧星标即可加入自选')
 
@@ -199,7 +199,7 @@ const fetchMarket = async () => {
         allCoins.value = Array.isArray(data?.coins) ? data.coins : []
         updatedTime.value = data?.updated_time || '--:--'
         btcMarketShare.value = Number(data?.overview?.btc_market_cap_percentage || 0)
-        totalVolume.value = Number(data?.overview?.total_volume_cny || 0)
+        totalVolume.value = Number(data?.overview?.total_volume_usd || 0)
         failedLogos.value = []
         loadError.value = allCoins.value.length === 0
     } catch (error) {
@@ -295,25 +295,28 @@ const markLogoError = (symbol: string) => {
     }
 }
 
-const formatCnyPrice = (value: number) => {
+const formatUsdPrice = (value: number) => {
     const price = Number(value || 0)
     const digits = price >= 100 ? 2 : price >= 1 ? 2 : price >= 0.01 ? 4 : 6
-    return `¥${price.toLocaleString('zh-CN', { minimumFractionDigits: digits, maximumFractionDigits: digits })}`
+    return `$${price.toLocaleString('en-US', { minimumFractionDigits: digits, maximumFractionDigits: digits })}`
 }
 
-const formatMarketCap = (value: number) => {
+const formatUsdMarketCap = (value: number) => {
     const amount = Number(value || 0)
-    if (amount >= 1e12) return `¥${(amount / 1e12).toFixed(2)}万亿`
-    if (amount >= 1e8) return `¥${(amount / 1e8).toFixed(2)}亿`
-    if (amount >= 1e4) return `¥${(amount / 1e4).toFixed(2)}万`
-    return `¥${amount.toFixed(2)}`
+    if (amount >= 1e12) return `$${(amount / 1e12).toFixed(2)}T`
+    if (amount >= 1e9) return `$${(amount / 1e9).toFixed(2)}B`
+    if (amount >= 1e6) return `$${(amount / 1e6).toFixed(2)}M`
+    if (amount >= 1e3) return `$${(amount / 1e3).toFixed(2)}K`
+    return `$${amount.toFixed(2)}`
 }
 
-const formatLargeCny = (value: number) => {
+const formatLargeUsd = (value: number) => {
     const amount = Number(value || 0)
-    if (amount >= 1e8) return `¥${(amount / 1e8).toLocaleString('zh-CN', { maximumFractionDigits: 2 })}亿`
-    if (amount >= 1e4) return `¥${(amount / 1e4).toLocaleString('zh-CN', { maximumFractionDigits: 2 })}万`
-    return `¥${amount.toLocaleString('zh-CN', { maximumFractionDigits: 2 })}`
+    if (amount >= 1e12) return `$${(amount / 1e12).toLocaleString('en-US', { maximumFractionDigits: 2 })}T`
+    if (amount >= 1e9) return `$${(amount / 1e9).toLocaleString('en-US', { maximumFractionDigits: 2 })}B`
+    if (amount >= 1e6) return `$${(amount / 1e6).toLocaleString('en-US', { maximumFractionDigits: 2 })}M`
+    if (amount >= 1e3) return `$${(amount / 1e3).toLocaleString('en-US', { maximumFractionDigits: 2 })}K`
+    return `$${amount.toLocaleString('en-US', { maximumFractionDigits: 2 })}`
 }
 
 const formatChange = (value: number) => {