diff --git a/develop/doc_cn/_sources/howto/dev/new_op_cn.md.txt b/develop/doc_cn/_sources/howto/dev/new_op_cn.md.txt
index c823d7e9fcd63dd7719ac1403952b03c2d2f03c0..6cfc9536f20e88571a9845a50be0341fe4d9f78b 100644
--- a/develop/doc_cn/_sources/howto/dev/new_op_cn.md.txt
+++ b/develop/doc_cn/_sources/howto/dev/new_op_cn.md.txt
@@ -214,7 +214,7 @@ MulOp(const std::string &type, const framework::VariableNameMap &inputs,
 
     ```cpp
     // if use Eigen unsupported module before include head files
-    #define EIGEN_USE_GPU
+    // #define EIGEN_USE_GPU
 
     namespace ops = paddle::operators;
     REGISTER_OP_GPU_KERNEL(mul, ops::MulKernel<paddle::platform::GPUPlace, float>);
diff --git a/develop/doc_cn/howto/dev/new_op_cn.html b/develop/doc_cn/howto/dev/new_op_cn.html
index 62c591f07cfc6f3346d881c4273ab244c2bd7ba4..525030728c0c9d4d754ba63461dff9815c436ae0 100644
--- a/develop/doc_cn/howto/dev/new_op_cn.html
+++ b/develop/doc_cn/howto/dev/new_op_cn.html
@@ -394,7 +394,7 @@ Kernel实现       | CPU、GPU共享Kernel实现在<code class="docutils literal
 <li>请注意，如果GPU Kernel的实现基于Eigen unsupported模块，那么在 <code class="docutils literal"><span class="pre">.cu</span></code>的开始请加上宏定义 <code class="docutils literal"><span class="pre">#define</span> <span class="pre">EIGEN_USE_GPU</span></code>，代码示例如下：</li>
 </ul>
 <div class="highlight-cpp"><div class="highlight"><pre><span></span><span class="c1">// if use Eigen unsupported module before include head files</span>
-<span class="cp">#define EIGEN_USE_GPU</span>
+<span class="c1">// #define EIGEN_USE_GPU</span>
 
 <span class="k">namespace</span> <span class="n">ops</span> <span class="o">=</span> <span class="n">paddle</span><span class="o">::</span><span class="n">operators</span><span class="p">;</span>
 <span class="n">REGISTER_OP_GPU_KERNEL</span><span class="p">(</span><span class="n">mul</span><span class="p">,</span> <span class="n">ops</span><span class="o">::</span><span class="n">MulKernel</span><span class="o">&lt;</span><span class="n">paddle</span><span class="o">::</span><span class="n">platform</span><span class="o">::</span><span class="n">GPUPlace</span><span class="p">,</span> <span class="kt">float</span><span class="o">&gt;</span><span class="p">);</span>