diff --git a/app.py b/app.py
index fc1b8735..b2e2591b 100755
--- a/app.py
+++ b/app.py
@@ -12232,12 +12232,19 @@ def get_market_statistics():
 
             available_dates = [str(row.TRADEDATE) for row in available_dates_result]
 
+            # 格式化日期为 YYYY-MM-DD
+            formatted_trade_date = trade_date.strftime('%Y-%m-%d') if hasattr(trade_date, 'strftime') else str(trade_date).split(' ')[0][:10]
+            formatted_available_dates = [
+                d.strftime('%Y-%m-%d') if hasattr(d, 'strftime') else str(d).split(' ')[0][:10]
+                for d in [row.TRADEDATE for row in available_dates_result]
+            ]
+
             return jsonify({
                 'success': True,
-                'trade_date': str(trade_date),
+                'trade_date': formatted_trade_date,
                 'summary': summary,
                 'details': list(statistics.values()),
-                'available_dates': available_dates
+                'available_dates': formatted_available_dates
             })
 
     except Exception as e:
@@ -12286,10 +12293,14 @@ def get_daily_top_concepts():
                     'stocks': concept.get('stocks', [])[:5]  # 只返回前5只股票
                 })
 
+            # 格式化日期为 YYYY-MM-DD
+            price_date = data.get('price_date', '')
+            formatted_date = str(price_date).split(' ')[0][:10] if price_date else ''
+
             return jsonify({
                 'success': True,
                 'data': top_concepts,
-                'trade_date': data.get('price_date'),
+                'trade_date': formatted_date,
                 'count': len(top_concepts)
             })
         else: