diff --git a/python/paddle/fluid/io.py b/python/paddle/fluid/io.py
index 10a91a15f841f11c9d12102cedca5654982bc6d3..5e301d834b3469f733485970b2d6b666bda71574 100644
--- a/python/paddle/fluid/io.py
+++ b/python/paddle/fluid/io.py
@@ -358,7 +358,7 @@ def save_vars(
                 data = fluid.layers.data(name="img", shape=[64, 784], append_batch_size=False)
                 w = paddle.create_parameter(shape=[784, 200], dtype='float32', name='fc_w')
                 b = paddle.create_parameter(shape=[200], dtype='float32', name='fc_b')
-                hidden_w = fluid.layers.matmul(x=data, y=w)
+                hidden_w = paddle.matmul(x=data, y=w)
                 hidden_b = fluid.layers.elementwise_add(hidden_w, b)
             place = fluid.CPUPlace()
             exe = fluid.Executor(place)
@@ -827,7 +827,7 @@ def load_vars(
                 data = fluid.layers.data(name="img", shape=[64, 784], append_batch_size=False)
                 w = paddle.create_parameter(shape=[784, 200], dtype='float32', name='fc_w')
                 b = paddle.create_parameter(shape=[200], dtype='float32', name='fc_b')
-                hidden_w = fluid.layers.matmul(x=data, y=w)
+                hidden_w = paddle.matmul(x=data, y=w)
                 hidden_b = fluid.layers.elementwise_add(hidden_w, b)
             place = fluid.CPUPlace()
             exe = fluid.Executor(place)
@@ -1592,7 +1592,7 @@ def load_inference_model(
                 data = fluid.layers.data(name="img", shape=[64, 784], append_batch_size=False)
                 w = paddle.create_parameter(shape=[784, 200], dtype='float32')
                 b = paddle.create_parameter(shape=[200], dtype='float32')
-                hidden_w = fluid.layers.matmul(x=data, y=w)
+                hidden_w = paddle.matmul(x=data, y=w)
                 hidden_b = fluid.layers.elementwise_add(hidden_w, b)
             place = fluid.CPUPlace()
             exe = fluid.Executor(place)