diff --git a/brep2sdf/networks/network.py b/brep2sdf/networks/network.py
index 033e07a..60d9782 100644
--- a/brep2sdf/networks/network.py
+++ b/brep2sdf/networks/network.py
@@ -223,9 +223,9 @@ def gradient(inputs, outputs):
     # 修正维度切片方式
     if points_grad is None:
         return torch.zeros_like(inputs[:, -3:])  # 处理空梯度情况
-    
+    #logger.debug(f"points_grad:{points_grad},shape:{points_grad.shape}")
     # 添加安全截取和归一化
     coord_grad = points_grad[:, -3:] if points_grad.shape[1] >=3 else points_grad
-    coord_grad = coord_grad / (coord_grad.norm(dim=-1, keepdim=True) + 1e-6)  # 安全归一化
+    coord_grad = coord_grad / (coord_grad.norm(dim=-1, keepdim=True) + 1e-16)  # 安全归一化
     
     return coord_grad
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