diff --git a/mindspore/python/mindspore/ops/operations/nn_ops.py b/mindspore/python/mindspore/ops/operations/nn_ops.py
index 1edb24cba6f..1f22236b804 100644
--- a/mindspore/python/mindspore/ops/operations/nn_ops.py
+++ b/mindspore/python/mindspore/ops/operations/nn_ops.py
@@ -8363,7 +8363,7 @@ class Conv3DTranspose(Primitive):
         ValueError: If bias is not none. The rank of dout and weight is not 5.
 
     Supported Platforms:
-        ``Ascend`` ``GPU`` ``CPU``
+        ``Ascend`` ``GPU``
 
     Examples:
         >>> dout = Tensor(np.ones([32, 16, 10, 32, 32]), mindspore.float16)