diff --git a/doc/howto/index.rst b/doc/howto/index.rst
index e2d688e186c66c56b219f63f5730affa30300592..ed8294b3c156da16320f7bfdcfd25a02c7a08e73 100644
--- a/doc/howto/index.rst
+++ b/doc/howto/index.rst
@@ -7,5 +7,6 @@ How to
   cmd_argument/index.md
   cluster/cluster_train.md
   algorithm/index.rst
+  optimization/index.rst
   dev/index.rst
   contribute_to_paddle.md
\ No newline at end of file
diff --git a/doc/optimization/gpu_profiling.rst b/doc/howto/optimization/gpu_profiling.rst
similarity index 100%
rename from doc/optimization/gpu_profiling.rst
rename to doc/howto/optimization/gpu_profiling.rst
diff --git a/doc/optimization/index.rst b/doc/howto/optimization/index.rst
similarity index 100%
rename from doc/optimization/index.rst
rename to doc/howto/optimization/index.rst
diff --git a/doc/optimization/nvvp1.png b/doc/howto/optimization/nvvp1.png
similarity index 100%
rename from doc/optimization/nvvp1.png
rename to doc/howto/optimization/nvvp1.png
diff --git a/doc/optimization/nvvp2.png b/doc/howto/optimization/nvvp2.png
similarity index 100%
rename from doc/optimization/nvvp2.png
rename to doc/howto/optimization/nvvp2.png
diff --git a/doc/optimization/nvvp3.png b/doc/howto/optimization/nvvp3.png
similarity index 100%
rename from doc/optimization/nvvp3.png
rename to doc/howto/optimization/nvvp3.png
diff --git a/doc/optimization/nvvp4.png b/doc/howto/optimization/nvvp4.png
similarity index 100%
rename from doc/optimization/nvvp4.png
rename to doc/howto/optimization/nvvp4.png