diff --git a/mindspore/nn/optim/sgd.py b/mindspore/nn/optim/sgd.py
index c2575be6c8..b802c8e7a5 100755
--- a/mindspore/nn/optim/sgd.py
+++ b/mindspore/nn/optim/sgd.py
@@ -136,7 +136,6 @@ class SGD(Optimizer):
         params = self.parameters
         accum = self.accum
         stat = self.stat
-        gradients = self.decay_weight(gradients)
         gradients = self.scale_grad(gradients)
         lr = self.get_lr()
         if self.is_group_lr: