diff --git a/train_merged.py b/train_merged.py
index dac10e1..b9ef8b5 100644
--- a/train_merged.py
+++ b/train_merged.py
@@ -21,7 +21,7 @@ results = model.train(
     cache='ram',          # 192GB 内存全量缓存
     optimizer='AdamW',
     close_mosaic=15,      # 最后15轮关闭mosaic
-    amp=True,             # 混合精度
+    amp=False,            # 混合精度 (NaN时关闭)
     patience=30,          # 早停耐心值
     project="blind_guide_project",
     name="yolo11l_blind_v2"  # 版本2