diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index 2de9d08ba5ce2bd2bfbedcd992702fbabcba9c1a..c364381566c122e9f083fe6e9d10783e2514ee32 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -485,6 +485,8 @@ function generate_api_spec() {
 
     spec_path=${PADDLE_ROOT}/paddle/fluid/API_${spec_kind}.spec 
     python ${PADDLE_ROOT}/tools/print_signatures.py paddle.fluid > $spec_path
+    awk -F '(' '{print $NF}' $spec_path >${spec_path}.doc
+    awk -F '(' '{$NF="";print $0}' $spec_path >${spec_path}.api
     if [ "$1" == "cp35-cp35m" ] || [ "$1" == "cp36-cp36m" ] || [ "$1" == "cp37-cp37m" ]; then 
         # Use sed to make python2 and python3 sepc keeps the same
         sed -i 's/arg0: str/arg0: unicode/g' $spec_path
diff --git a/tools/check_api_approvals.sh b/tools/check_api_approvals.sh
index de61ac45b3246592dec59ad4a91c4ce4ffb32094..e953c4326dbb7db49a95fc78f10f2adcb31a4236 100644
--- a/tools/check_api_approvals.sh
+++ b/tools/check_api_approvals.sh
@@ -41,26 +41,37 @@ if [[ $git_files -gt 19 || $git_count -gt 999 ]];then
   fi
 fi    
 
-api_spec_diff=`python ${PADDLE_ROOT}/tools/diff_api.py ${PADDLE_ROOT}/paddle/fluid/API_DEV.spec  ${PADDLE_ROOT}/paddle/fluid/API_PR.spec` 
+api_spec_diff=`python ${PADDLE_ROOT}/tools/diff_api.py ${PADDLE_ROOT}/paddle/fluid/API_DEV.spec.api  ${PADDLE_ROOT}/paddle/fluid/API_PR.spec.api` 
 if [ "$api_spec_diff" != "" ]; then
+    APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 46782768 47554610 2870059` 
+    if [ "${APPROVALS}" == "FALSE" ]; then
+        failed_num=`expr $failed_num + 1`
+        echo_line="You must have one RD (XiaoguangHu01 or lanxianghit or saxon-zh)approval for the api change for the management reason of API interface."
+        echo_list=(${echo_list[@]}$failed_num "." $echo_line)
+    fi
+fi
+
+api_doc_spec_diff=`python ${PADDLE_ROOT}/tools/diff_api.py ${PADDLE_ROOT}/paddle/fluid/API_DEV.spec.doc  ${PADDLE_ROOT}/paddle/fluid/API_PR.spec.doc` 
+if [ "$api_doc_spec_diff" != "" ]; then
     APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 2 46782768 7534971 14105589 12605721 3064195 328693 47554610 39645414 11195205 20274488 45024560`
     if [ "${APPROVALS}" == "FALSE" ]; then
         failed_num=`expr $failed_num + 1`
-        echo_line="You must have two RD (XiaoguangHu01 or wanghaoshuang or guoshengCS or heavengate or kuke or Superjomn or lanxianghit or cyj1986 or hutuxian or frankwhzhang or nepeplwu) approval for the api change for the management reason of API interface and API document."
+        echo_line="You must have two RD (XiaoguangHu01 or wanghaoshuang or guoshengCS or heavengate or kuke or Superjomn or lanxianghit or cyj1986 or hutuxian or frankwhzhang or nepeplwu) approval for the api change for the management reason of API document."
         echo_list=(${echo_list[@]}$failed_num "." $echo_line)
     fi
 fi
 
+
 for API_FILE in ${API_FILES[*]}; do
   API_CHANGE=`git diff --name-only upstream/$BRANCH | grep "${API_FILE}" | grep -v "/CMakeLists.txt" || true`
   echo "checking ${API_FILE} change, PR: ${GIT_PR_ID}, changes: ${API_CHANGE}"
   if [ "${API_CHANGE}" ] && [ "${GIT_PR_ID}" != "" ]; then
       # NOTE: per_page=10000 should be ok for all cases, a PR review > 10000 is not human readable.
-      # approval_user_list: XiaoguangHu01 46782768,chengduoZH 30176695,Xreki 12538138,luotao1 6836917,sneaxiy 32832641,tensor-tang 21351065,xsrobin 50069408,qingqing01 7845005,guoshengCS 14105589,heavengate 12605721,kuke 3064195,Superjomn 328693,lanxianghit 47554610,cyj1986 39645414,hutuxian 11195205,frankwhzhang 20274488,nepeplwu 45024560,Dianhai 38231817,JiabinYang 22361972,chenwhql 22561442,seiriosPlus 5442383,gongweibao 10721757. 
+      # approval_user_list: XiaoguangHu01 46782768,Xreki 12538138,luotao1 6836917,sneaxiy 32832641,qingqing01 7845005,guoshengCS 14105589,heavengate 12605721,kuke 3064195,Superjomn 328693,lanxianghit 47554610,cyj1986 39645414,hutuxian 11195205,frankwhzhang 20274488,nepeplwu 45024560,Dianhai 38231817,JiabinYang 22361972,chenwhql 22561442,seiriosPlus 5442383,gongweibao 10721757,saxon-zh 2870059. 
       if [ "${API_FILE}" == "paddle/fluid/op_use_default_grad_op_maker.spec" ];then
         APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 32832641 6836917`
       elif [ "${API_FILE}" == "CMakeLists.txt" ];then
-        APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 6836917 46782768 30176695`
+        APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 6836917 46782768`
       elif [ "${API_FILE}" == "python/paddle/fluid/__init__.py" ];then
          APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 6836917 47554610`
       elif [ "${API_FILE}" == "python/requirements.txt" ];then
@@ -68,7 +79,7 @@ for API_FILE in ${API_FILES[*]}; do
       elif [ "${API_FILE}" == "paddle/fluid/operators/distributed/send_recv.proto.in" ];then
          APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 10721757 5442383`
       else
-        APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 21351065 3048612 46782768 30176695 12538138 6836917 32832641`
+        APPROVALS=`echo ${approval_line}|python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 3048612 46782768 12538138 6836917 32832641`
       fi
       echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
       if [ "${APPROVALS}" == "FALSE" ]; then
@@ -78,7 +89,7 @@ for API_FILE in ${API_FILES[*]}; do
           echo_list=(${echo_list[@]}$failed_num "." $echo_line)
         elif [ "${API_FILE}" == "CMakeLists.txt" ];then
           failed_num=`expr $failed_num + 1`
-          echo_line="You must have one RD (luotao1 or chengduoZH or XiaoguangHu01) approval for CMakeLists.txt, which manages the compilation parameter.\n"
+          echo_line="You must have one RD (luotao1 or XiaoguangHu01) approval for CMakeLists.txt, which manages the compilation parameter.\n"
           echo_list=(${echo_list[@]}$failed_num "." $echo_line)
         elif [ "${API_FILE}" == "python/requirements.txt" ];then
           failed_num=`expr $failed_num + 1`
@@ -94,7 +105,7 @@ for API_FILE in ${API_FILES[*]}; do
           echo_list=(${echo_list[@]}$failed_num "." $echo_line)
         else
           failed_num=`expr $failed_num + 1`
-          echo_line="You must have one RD (XiaoguangHu01,chengduoZH,Xreki,luotao1,sneaxiy,tensor-tang) approval for ${API_FILE}, which manages the underlying code for fluid.\n"
+          echo_line="You must have one RD (XiaoguangHu01,Xreki,luotao1,sneaxiy) approval for ${API_FILE}, which manages the underlying code for fluid.\n"
           echo_list=(${echo_list[@]}$failed_num "." $echo_line)
         fi
       fi
@@ -104,11 +115,11 @@ done
 HAS_CONST_CAST=`git diff -U0 upstream/$BRANCH |grep -o -m 1 "const_cast" || true`
 if [ ${HAS_CONST_CAST} ] && [ "${GIT_PR_ID}" != "" ]; then
     APPROVALS=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000 | \
-    python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 21351065 3048612 46782768 30176695 12538138 6836917 32832641`
+    python ${PADDLE_ROOT}/tools/check_pr_approval.py 1 3048612 46782768 12538138 6836917 32832641`
     echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
     if [ "${APPROVALS}" == "FALSE" ]; then
         failed_num=`expr $failed_num + 1`
-        echo_line="You must have one RD (XiaoguangHu01,chengduoZH,Xreki,luotao1,sneaxiy,tensor-tang) approval for the usage (either add or delete) of const_cast.\n"
+        echo_line="You must have one RD (XiaoguangHu01,Xreki,luotao1,sneaxiy) approval for the usage (either add or delete) of const_cast.\n"
         echo_list=(${echo_list[@]}$failed_num "." $echo_line)
     fi
 fi
diff --git a/tools/print_signatures.py b/tools/print_signatures.py
index 7741b6aa5376448c0a371f9a3cc968c367f7f7cb..05c4911828a60bbba98af4ebfe961c3be48861ea 100644
--- a/tools/print_signatures.py
+++ b/tools/print_signatures.py
@@ -46,19 +46,19 @@ def queue_dict(member, cur_name):
     if cur_name in omitted_list:
         return
 
-    try:
-        doc = ('document', md5(member.__doc__))
-        if inspect.isclass(member):
-            args = member.__module__ + "." + member.__name__
-        else:
+    doc = ('document', md5(member.__doc__))
+
+    if inspect.isclass(member):
+        args = member.__module__ + "." + member.__name__
+    else:
+        try:
             args = inspect.getargspec(member)
-        all = (args, doc)
-        member_dict[cur_name] = all
-    except TypeError:  # special for PyBind method
-        member_dict[cur_name] = "  ".join([
-            line.strip() for line in pydoc.render_doc(member).split('\n')
-            if "->" in line
-        ])
+        except TypeError:  # special for PyBind method
+            args = "  ".join([
+                line.strip() for line in pydoc.render_doc(member).split('\n')
+                if "->" in line
+            ])
+    member_dict[cur_name] = (args, doc)
 
 
 def visit_member(parent_name, member):