diff --git a/mindspore/ops/_grad/grad_nn_ops.py b/mindspore/ops/_grad/grad_nn_ops.py
index c557301285cf585a2b9a6dc2c423975232481df2..b5a0fb3bd8cd615ec3ff61742aeda76ee6c5d79a 100755
--- a/mindspore/ops/_grad/grad_nn_ops.py
+++ b/mindspore/ops/_grad/grad_nn_ops.py
@@ -502,7 +502,8 @@ def get_bprop_smooth_l1_loss(self):
 
     def bprop(prediction, target, out, dout):
         dx = grad(prediction, target, dout)
-        return dx, zeros_like(target)
+        dy = grad(target, prediction, dout)
+        return dx, dy
 
     return bprop