diff --git a/doc/api/v2/data.rst b/doc/api/v2/data.rst
index d2723a81e214b032502e334e7b5cf5ada86ec88c..1c0a202a8c04322de3e9533c11fb5c74abac6c62 100644
--- a/doc/api/v2/data.rst
+++ b/doc/api/v2/data.rst
@@ -1,3 +1,8 @@
+================
+Data Related API
+================
+
+
 #########
 DataTypes
 #########
diff --git a/doc/api/v2/model_configs.rst b/doc/api/v2/model_configs.rst
index 52e2dcd53055c68f2418adc0ac8a6a36b10dc22c..e9cd3d5bf7b0e9e59c231bcabdb163a740909de1 100644
--- a/doc/api/v2/model_configs.rst
+++ b/doc/api/v2/model_configs.rst
@@ -1,3 +1,7 @@
+#########################
+Configuration Related API
+#########################
+
 ======
 Layers
 ======
@@ -38,5 +42,5 @@ Networks
 Optimizers
 ==========
 
-..	automodule:: paddle.v2.optimizers
+..	automodule:: paddle.v2.optimizer
 	:members:
diff --git a/doc/api/v2/run_logic.rst b/doc/api/v2/run_logic.rst
index 522093f8aeedb81c20e0aefa324e0567851af889..904d45966dfc16a474016ff48fd5a951988b0ab0 100644
--- a/doc/api/v2/run_logic.rst
+++ b/doc/api/v2/run_logic.rst
@@ -1,3 +1,7 @@
+###########
+Trainer API
+###########
+
 ==========
 Parameters
 ==========