diff --git a/crypto_monitor_gate/app.py b/crypto_monitor_gate/app.py
index 1fc39ce..1ed39c8 100644
--- a/crypto_monitor_gate/app.py
+++ b/crypto_monitor_gate/app.py
@@ -394,8 +394,10 @@ os.makedirs(UPLOAD_FOLDER, exist_ok=True)
 os.makedirs(ORDER_CHART_DIR, exist_ok=True)
 app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
 
+from lib.exchange.gate_ccxt_lib import gate_ccxt_class
+
 # Gate.io USDT 永续（swap）
-exchange = ccxt.gateio({
+exchange = gate_ccxt_class()({
     "enableRateLimit": True,
     "options": {
         "defaultType": "swap",
diff --git a/lib/exchange/gate_ccxt_lib.py b/lib/exchange/gate_ccxt_lib.py
new file mode 100644
index 0000000..daf2bbd
--- /dev/null
+++ b/lib/exchange/gate_ccxt_lib.py
@@ -0,0 +1,9 @@
+"""Gate.io ccxt 构造（ccxt 4.x 起类名由 gateio 改为 gate）。"""
+from __future__ import annotations
+
+import ccxt
+
+
+def gate_ccxt_class():
+    """返回 ccxt Gate 交易所类（兼容旧版 gateio 名称）。"""
+    return getattr(ccxt, "gate", None) or ccxt.gateio
diff --git a/manual_trading_hub/agent.py b/manual_trading_hub/agent.py
index ce620b9..1e37dce 100644
--- a/manual_trading_hub/agent.py
+++ b/manual_trading_hub/agent.py
@@ -158,7 +158,9 @@ def _make_exchange() -> Any:
     secret = (os.getenv("GATE_API_SECRET") or "").strip()
     if not key or not secret:
         raise RuntimeError("缺少 GATE_API_KEY / GATE_API_SECRET")
-    ex = ccxt.gateio(
+    from lib.exchange.gate_ccxt_lib import gate_ccxt_class
+
+    ex = gate_ccxt_class()(
         {
             "apiKey": key,
             "secret": secret,