diff --git a/vnpy/app/algo_trading/engine.py b/vnpy/app/algo_trading/engine.py
index fb227231..fa72e59b 100644
--- a/vnpy/app/algo_trading/engine.py
+++ b/vnpy/app/algo_trading/engine.py
@@ -4,7 +4,7 @@ from vnpy.trader.engine import BaseEngine, MainEngine
 from vnpy.trader.event import (
     EVENT_TICK, EVENT_TIMER, EVENT_ORDER, EVENT_TRADE)
 from vnpy.trader.constant import (Direction, Offset, OrderType)
-from vnpy.trader.object import (SubscribeRequest, OrderRequest)
+from vnpy.trader.object import (SubscribeRequest, OrderRequest, LogData)
 from vnpy.trader.utility import load_json, save_json, round_to
 
 from .template import AlgoTemplate
@@ -224,8 +224,8 @@ class AlgoEngine(BaseEngine):
         if algo:
             msg = f"{algo.algo_name}：{msg}"
 
-        event = Event(EVENT_ALGO_LOG)
-        event.data = msg
+        log = LogData(msg=msg, gateway_name=APP_NAME)
+        event = Event(EVENT_ALGO_LOG, data=log)
         self.event_engine.put(event)
 
     def put_setting_event(self, setting_name: str, setting: dict):
diff --git a/vnpy/app/algo_trading/ui/widget.py b/vnpy/app/algo_trading/ui/widget.py
index d67f94e0..57b6594c 100644
--- a/vnpy/app/algo_trading/ui/widget.py
+++ b/vnpy/app/algo_trading/ui/widget.py
@@ -520,7 +520,8 @@ class LogMonitor(QtWidgets.QTableWidget):
 
     def process_log_event(self, event):
         """"""
-        msg = event.data
+        log = event.data
+        msg = log.msg
         timestamp = datetime.now().strftime("%H:%M:%S")
 
         timestamp_cell = QtWidgets.QTableWidgetItem(timestamp)