diff --git a/frontend/src/components/StatsDashboard.jsx b/frontend/src/components/StatsDashboard.jsx
index 4a9322b..9dbb8dd 100644
--- a/frontend/src/components/StatsDashboard.jsx
+++ b/frontend/src/components/StatsDashboard.jsx
@@ -76,29 +76,22 @@ const StatsDashboard = () => {
                   ? trade.entry_value_usdt 
                   : (parseFloat(trade.quantity || 0) * parseFloat(trade.entry_price || 0))
                 
-                // 格式化开仓时间
+                // 计算保证金 = 开仓USDT数量 / 杠杆
+                const leverage = parseFloat(trade.leverage || 1)
+                const margin = leverage > 0 ? entryValueUsdt / leverage : 0
+                
+                // 格式化开仓时间为具体的年月日时分秒
                 const formatEntryTime = (timeStr) => {
                   if (!timeStr) return null
                   try {
                     const date = new Date(timeStr)
-                    const now = new Date()
-                    const diffMs = now - date
-                    const diffMins = Math.floor(diffMs / 60000)
-                    const diffHours = Math.floor(diffMs / 3600000)
-                    const diffDays = Math.floor(diffMs / 86400000)
-                    
-                    if (diffMins < 1) return '刚刚'
-                    if (diffMins < 60) return `${diffMins}分钟前`
-                    if (diffHours < 24) return `${diffHours}小时前`
-                    if (diffDays < 7) return `${diffDays}天前`
-                    
-                    // 超过7天显示具体日期
-                    return date.toLocaleString('zh-CN', {
-                      month: '2-digit',
-                      day: '2-digit',
-                      hour: '2-digit',
-                      minute: '2-digit'
-                    })
+                    const year = date.getFullYear()
+                    const month = String(date.getMonth() + 1).padStart(2, '0')
+                    const day = String(date.getDate()).padStart(2, '0')
+                    const hours = String(date.getHours()).padStart(2, '0')
+                    const minutes = String(date.getMinutes()).padStart(2, '0')
+                    const seconds = String(date.getSeconds()).padStart(2, '0')
+                    return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`
                   } catch (e) {
                     return timeStr
                   }
@@ -111,7 +104,6 @@ const StatsDashboard = () => {
                       {trade.side}
                     </div>
                     <div className="trade-info">
-                      <div>开仓金额: {entryValueUsdt.toFixed(2)} USDT</div>
                       <div>数量: {parseFloat(trade.quantity || 0).toFixed(4)}</div>
                       <div>入场价: {parseFloat(trade.entry_price || 0).toFixed(4)}</div>
                       {trade.mark_price && (
@@ -120,6 +112,7 @@ const StatsDashboard = () => {
                       {trade.leverage && (
                         <div>杠杆: {trade.leverage}x</div>
                       )}
+                      <div>保证金: {margin.toFixed(2)} USDT</div>
                       {trade.entry_time && (
                         <div className="entry-time">开仓时间: {formatEntryTime(trade.entry_time)}</div>
                       )}