diff --git a/examples/ocr/seq2seq_attn.py b/examples/ocr/seq2seq_attn.py
index 2315e982c9474884f4c6dc5f7932be5cd90eadbe..e0f19e2e4f8372ff700be0997fb0c19654437152 100644
--- a/examples/ocr/seq2seq_attn.py
+++ b/examples/ocr/seq2seq_attn.py
@@ -15,6 +15,7 @@ from __future__ import print_function
 
 import numpy as np
 
+import paddle
 import paddle.fluid as fluid
 import paddle.fluid.layers as layers
 from paddle.fluid.layers import BeamSearchDecoder
@@ -22,7 +23,7 @@ from paddle.fluid.layers import BeamSearchDecoder
 from paddle.text import RNNCell, RNN, DynamicDecode
 
 
-class ConvBNPool(fluid.dygraph.Layer):
+class ConvBNPool(paddle.nn.Layer):
     def __init__(self,
                  in_ch,
                  out_ch,
@@ -81,7 +82,7 @@ class ConvBNPool(fluid.dygraph.Layer):
         return out
 
 
-class CNN(fluid.dygraph.Layer):
+class CNN(paddle.nn.Layer):
     def __init__(self, in_ch=1, is_test=False):
         super(CNN, self).__init__()
         self.conv_bn1 = ConvBNPool(in_ch, 16)
@@ -134,7 +135,7 @@ class GRUCell(RNNCell):
         return [self.hidden_size]
 
 
-class Encoder(fluid.dygraph.Layer):
+class Encoder(paddle.nn.Layer):
     def __init__(
             self,
             in_channel=1,
@@ -185,7 +186,7 @@ class Encoder(fluid.dygraph.Layer):
         return gru_bwd, encoded_vector, encoded_proj
 
 
-class Attention(fluid.dygraph.Layer):
+class Attention(paddle.nn.Layer):
     """
     Neural Machine Translation by Jointly Learning to Align and Translate.
     https://arxiv.org/abs/1409.0473
@@ -230,7 +231,7 @@ class DecoderCell(RNNCell):
         return hidden, hidden
 
 
-class Decoder(fluid.dygraph.Layer):
+class Decoder(paddle.nn.Layer):
     def __init__(self, num_classes, emb_dim, encoder_size, decoder_size):
         super(Decoder, self).__init__()
         self.decoder_attention = RNN(DecoderCell(encoder_size, decoder_size))
@@ -247,7 +248,7 @@ class Decoder(fluid.dygraph.Layer):
         return pred
 
 
-class Seq2SeqAttModel(fluid.dygraph.Layer):
+class Seq2SeqAttModel(paddle.nn.Layer):
     def __init__(
             self,
             in_channle=1,
@@ -320,7 +321,7 @@ class Seq2SeqAttInferModel(Seq2SeqAttModel):
         return rs
 
 
-class WeightCrossEntropy(fluid.dygraph.Layer):
+class WeightCrossEntropy(paddle.nn.Layer):
     def __init__(self):
         super(WeightCrossEntropy, self).__init__()