diff --git a/doc/fluid/api/layers.rst b/doc/fluid/api/layers.rst
index f78e6db3268e44d5f30d83508f07c4ed68106e48..ef8ada407be938c8eae0c40db7502f37a2bfba40 100644
--- a/doc/fluid/api/layers.rst
+++ b/doc/fluid/api/layers.rst
@@ -790,6 +790,12 @@ shape
 ..  autofunction:: paddle.fluid.layers.shape
     :noindex:
 
+iou_similarity
+-----
+
+..  autofunction:: paddle.fluid.layers.iou_similarity
+    :noindex:
+
 sigmoid
 -------
 
diff --git a/paddle/fluid/operators/detection/iou_similarity_op.cc b/paddle/fluid/operators/detection/iou_similarity_op.cc
index 8e58605fcea04f9ffa97ce8cca53c073e7068aaf..b08c2cdf5379b39fbcf83da42d518cbd333e05b6 100644
--- a/paddle/fluid/operators/detection/iou_similarity_op.cc
+++ b/paddle/fluid/operators/detection/iou_similarity_op.cc
@@ -69,10 +69,11 @@ class IOUSimilarityOpMaker : public framework::OpProtoAndCheckerMaker {
 
     AddComment(R"DOC(
 IOU Similarity Operator.
+
 Computes intersection-over-union (IOU) between two box lists.
- Box list 'X' should be a LoDTensor and 'Y' is a common Tensor,
- boxes in 'Y' are shared by all instance of the batched inputs of X.
- Given two boxes A and B, the calculation of IOU is as follows:
+Box list 'X' should be a LoDTensor and 'Y' is a common Tensor,
+boxes in 'Y' are shared by all instance of the batched inputs of X.
+Given two boxes A and B, the calculation of IOU is as follows:
 
 $$
 IOU(A, B) = 
diff --git a/paddle/fluid/operators/roi_pool_op.cc b/paddle/fluid/operators/roi_pool_op.cc
index cb8982e57fe2c0afff8ea81a1693c812f48e49c8..a6247a467a6f2a216a457366678024965b0d21e9 100644
--- a/paddle/fluid/operators/roi_pool_op.cc
+++ b/paddle/fluid/operators/roi_pool_op.cc
@@ -146,6 +146,7 @@ is to perform max pooling on inputs of nonuniform sizes to obtain
 fixed-size feature maps (e.g. 7*7).
 
 The operator has three steps:
+
 1. Dividing each region proposal into equal-sized sections with
    the pooled_width and pooled_height
 2. Finding the largest value in each section
diff --git a/python/paddle/fluid/layers/io.py b/python/paddle/fluid/layers/io.py
index cff074faff19b0f5687f3f438ef3e4fa4e554174..ecfaf35296153420c8aca28c99088a6e6ffc410d 100644
--- a/python/paddle/fluid/layers/io.py
+++ b/python/paddle/fluid/layers/io.py
@@ -135,8 +135,8 @@ class ListenAndServ(object):
                     fluid.initializer.Constant(value=1.0)(x, main.global_block())
                     layers.scale(x=x, scale=10.0, out=out_var)
 
-            self.server_exe = fluid.Executor(place)
-            self.server_exe.run(main)
+            exe = fluid.Executor(place)
+            exe.run(main)
     """
 
     def __init__(self, endpoint, inputs, fan_in=1, optimizer_mode=True):
diff --git a/python/paddle/fluid/layers/nn.py b/python/paddle/fluid/layers/nn.py
index a1b350374670cfc97ec123f7e1c5871fb47622fe..10dba6cafd3deae1e518e5d8cd37b7bc9f17dd00 100644
--- a/python/paddle/fluid/layers/nn.py
+++ b/python/paddle/fluid/layers/nn.py
@@ -850,7 +850,9 @@ def crf_decoding(input, param_attr, label=None):
 
     Args:
         input(${emission_type}): ${emission_comment}
+
         param_attr(ParamAttr): The parameter attribute for training.
+
         label(${label_type}): ${label_comment}
 
     Returns:
@@ -875,8 +877,8 @@ def cos_sim(X, Y):
     ${comment}
 
     Args:
-        X(${X_type}): ${X_comment}
-        Y(${Y_type}): ${Y_comment}
+        X(${x_type}): ${x_comment}
+        Y(${y_type}): ${x_comment}
     
     Returns:
         A Variable contains the output of this layer.
@@ -1076,13 +1078,18 @@ def chunk_eval(input,
     ${comment}
 
     Args:
-        input(Variable): ${Inference_comment}
-        label(Variable): ${Label_comment}
+        input(Variable): ${inference_comment}
+
+        label(Variable): ${label_comment}
+
         chunk_scheme(${chunk_scheme_type}): ${chunk_scheme_comment}
+
         num_chunk_types(${num_chunk_types_type}): ${num_chunk_types_comment}
+
         excluded_chunk_types(${excluded_chunk_types_type}): ${excluded_chunk_types_comment}
 
-    Returns(typle): a tuple of variables:
+    Returns:
+        chunk_eval(tuple): a tuple of variables:
         (precision, recall, f1_score, num_infer_chunks, num_label_chunks, num_correct_chunks)
 
     """
@@ -1755,7 +1762,6 @@ def beam_search_decode(ids, scores, name=None):
     return sentence_ids, sentence_scores
 
 
-@templatedoc()
 def conv2d_transpose(input,
                      num_filters,
                      output_size=None,
@@ -3893,14 +3899,18 @@ def roi_pool(input, rois, pooled_height=1, pooled_width=1, spatial_scale=1.0):
     ${comment}
 
     Args:
-        input (Variable): ${X_comment}
-        rois (Variable): ${ROIs_comment}
+        input (Variable): ${x_comment}
+
+        rois (Variable): ROIs (Regions of Interest) to pool over.
+
         pooled_height (integer): ${pooled_height_comment} Default: 1
+
         pooled_width (integer): ${pooled_width_comment} Default: 1
+
         spatial_scale (float): ${spatial_scale_comment} Default: 1.0
 
     Returns:
-        pool_out (Variable): ${Out_comment}.
+        roi_pool (Variable): ${out_comment}.
 
     Examples:
         .. code-block:: python