diff --git a/frontend/mining-admin-web/src/lib/utils/format.ts b/frontend/mining-admin-web/src/lib/utils/format.ts
index d2040ed9..9be81417 100644
--- a/frontend/mining-admin-web/src/lib/utils/format.ts
+++ b/frontend/mining-admin-web/src/lib/utils/format.ts
@@ -4,7 +4,11 @@ export function formatNumber(value: number | string | undefined | null, decimals
   if (value === undefined || value === null) return '-';
   const num = typeof value === 'string' ? parseFloat(value) : value;
   if (isNaN(num)) return '-';
-  return num.toLocaleString('zh-CN', { minimumFractionDigits: decimals, maximumFractionDigits: decimals });
+  // 使用确定性格式化，避免 SSR hydration 错误
+  const fixed = num.toFixed(decimals);
+  const parts = fixed.split('.');
+  parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+  return parts.join('.');
 }
 
 export function formatDecimal(value: string | number | undefined | null, precision = 8): string {