diff --git a/cryptoai/api/__pycache__/binance_api.cpython-313.pyc b/cryptoai/api/__pycache__/binance_api.cpython-313.pyc
index b12ba3a..7d3d072 100644
Binary files a/cryptoai/api/__pycache__/binance_api.cpython-313.pyc and b/cryptoai/api/__pycache__/binance_api.cpython-313.pyc differ
diff --git a/cryptoai/api/binance_api.py b/cryptoai/api/binance_api.py
index 5d33849..19699a5 100644
--- a/cryptoai/api/binance_api.py
+++ b/cryptoai/api/binance_api.py
@@ -84,7 +84,7 @@ class BinanceAPI:
             print(f"获取交易对大户持仓多空比时出错: {e}")
             return 0
 
-    def get_historical_klines(self, symbol: str, interval: str, start_str: str, end_str: Optional[str] = None) -> pd.DataFrame:
+    def get_historical_klines(self, symbol: str, interval: str, start_str: str, end_str: Optional[str] = None, limit: Optional[int] = None) -> pd.DataFrame:
         """
         获取历史K线数据
         
@@ -102,7 +102,8 @@ class BinanceAPI:
                 symbol=symbol,
                 interval=interval,
                 start_str=start_str,
-                end_str=end_str
+                end_str=end_str,
+                limit=limit
             )
             
             # 转换为DataFrame
diff --git a/cryptoai/routes/crypto.py b/cryptoai/routes/crypto.py
index d9594a7..fa5a963 100644
--- a/cryptoai/routes/crypto.py
+++ b/cryptoai/routes/crypto.py
@@ -32,7 +32,7 @@ class CryptoAnalysisRequest(BaseModel):
     timeframe: Optional[str] = None
 
 @router.get("/kline/{symbol}")
-async def get_crypto_kline(symbol: str, timeframe: Optional[str] = None, start_time: Optional[str] = None, end_time: Optional[str] = None):
+async def get_crypto_kline(symbol: str, timeframe: Optional[str] = None, start_time: Optional[str] = None, end_time: Optional[str] = None, limit: Optional[int] = 200):
     
     binance_api = get_binance_api()
 
@@ -45,7 +45,7 @@ async def get_crypto_kline(symbol: str, timeframe: Optional[str] = None, start_t
 
     print(f"symbol: {symbol}, timeframe: {timeframe}, start_time: {start_time}, end_time: {end_time}")
     
-    kline = binance_api.get_historical_klines(symbol, timeframe, start_time, end_time)
+    kline = binance_api.get_historical_klines(symbol, timeframe, start_time, end_time, limit=limit)
     
     data_processor = DataProcessor()
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 242c96f..1df7cc4 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,7 +29,7 @@ services:
   cryptoai-api:
     build: .
     container_name: cryptoai-api
-    image: cryptoai-api:0.0.24
+    image: cryptoai-api:0.0.25
     restart: always
     ports:
       - "8000:8000"