diff --git a/scripts/README.md b/scripts/README.md
new file mode 100644
index 0000000000..80e71eebf9
--- /dev/null
+++ b/scripts/README.md
@@ -0,0 +1,36 @@
+Github Pull Request Helper Scripts
+======================================
+
+这里提供一些脚本辅助github CI机器人，方便标签和合并代码：
+
+
+* approve.sh
+
+合并一个PR，使用方法：
+
+    ./scripts/approve.sh <PRN> [check_reviewers]
+
+合并一个PR之前，将会做如下检查：
+
+1. 该PR的状态为open
+2. 该PR的mergeable状态为true (如果有冲突，则mergeable=false)
+3. 该PR的所有CI检查都通过
+4. 如果命令行的check_reviewers为非空字符串，则还会检查是否所有requested reviewers都lgtm了这个PR
+
+需要注意的是，在执行脚本之前，请确认已经人肉review过代码，并且认为可以合并了再执行。脚本只是为了方便合并，并且确保合并前没有忽略的检查，并不是为了替代人肉code review。
+
+
+* approve_all.sh
+
+合并一组PR，使用方法：
+
+    ./scripts/approve_all.sh <PRN>
+
+这组PR由master上的主PR和backport到各个分支的cherry pick PR组成。对Master上的PR会做所有4项检查，对其他PR只做前3项检查。
+
+
+* lgtm.sh
+
+给一个PR打上lgtm的标签。使用方法：
+
+    ./scripts/lgtm.sh <PRN>
diff --git a/scripts/advchecks.py b/scripts/advchecks.py
new file mode 100755
index 0000000000..438d4e5935
--- /dev/null
+++ b/scripts/advchecks.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+
+import json
+
+def find_lgtms(comments):
+    commenters = []
+    for comment in comments:
+        body = comment["body"].strip()
+        if body == "/lgtm":
+            commenters.append("%s(%s)" % (comment["user"]["login"], comment["user"]["id"]))
+    return commenters
+
+def find_reviewers(pulls):
+    reviewers = []
+    for reviewer in pulls["requested_reviewers"]:
+        reviewers.append("%s(%s)" % (reviewer["login"], reviewer["id"]))
+    return reviewers
+ 
+if __name__ == '__main__':
+    import sys
+
+    if len(sys.argv) < 3:
+        print(sys.argv[0], "<pull>", "<comment>")
+        sys.exit(-1)
+
+    with open(sys.argv[1]) as pullfile:
+        pulls = json.load(pullfile)
+        with open(sys.argv[2]) as commentfile:
+            comments = json.load(commentfile)
+            rvs = find_reviewers(pulls)
+            cms = find_lgtms(comments)
+            if len(rvs) == 0:
+                print("No reviwer is assigned, give up check...")
+                os.exit(-1)
+            print("Assigned reviwers: %s" % ", ".join(rvs))
+            print("Lgtm reviwers: %s" % ", ".join(cms))
+            req = []
+            for rv in rvs:
+                if rv not in cms:
+                    req.append(rv)
+            if len(req) > 0:
+                print("Reviewers %s needs /lgtm" % ",".join(req))
+                sys.exit(-1)
diff --git a/scripts/approve.sh b/scripts/approve.sh
index c94ba0f943..62f59da86d 100755
--- a/scripts/approve.sh
+++ b/scripts/approve.sh
@@ -1,7 +1,11 @@
 #!/bin/bash
 
+pushd $(dirname "$BASH_SOURCE") > /dev/null
+CUR_DIR=$(pwd)
+popd > /dev/null
+
 PR=$1
-MSG=$2
+REVIEWER_CHECK=$2
 
 if [ -z "$PR" ]; then
     echo "Usage: $0 <pr_number>"
@@ -53,6 +57,10 @@ function label() {
     local MSG=$2
     local LABEL=$3
 
+    if check_label $PRN $LABEL > /dev/null; then
+        echo "Label $LABEL success!"
+        return 0
+    fi
     for try in $(seq 3)
     do
         echo "Send $MSG ..."
@@ -121,6 +129,23 @@ if ! label "$PR" "/lgtm" "lgtm"; then
     exit 1
 fi
 
+if [ -n "$REVIEWER_CHECK" ]; then
+    echo "Check all requested reviwers /lgtm the pull request: "
+    pullfile=$(mktemp)
+    commentfile=$(mktemp)
+    function cleanup {
+        rm -rf "$pullfile" "$commentfile"
+    }
+    trap cleanup EXIT
+    hub api repos/{owner}/{repo}/pulls/$PR > $pullfile
+    hub api repos/{owner}/{repo}/issues/$PR/comments > $commentfile
+    if ! $CUR_DIR/advchecks.py $pullfile $commentfile; then
+        echo "Not all assigned reviwers comment lgtm, give up..."
+        exit 1
+    fi
+    echo "passed!"
+fi
+
 if ! label "$PR" "/approve" "approved"; then
     echo "Label approved failed"
     exit 1
diff --git a/scripts/approve_all.sh b/scripts/approve_all.sh
index 93d31c3ad0..33477bc819 100755
--- a/scripts/approve_all.sh
+++ b/scripts/approve_all.sh
@@ -34,12 +34,15 @@ done
 
 echo "Going to merge the following pull requests ${PRNS[@]}:"
 
+REVIEWER_CHECK=yes
 for PRN in "${PRNS[@]}"
 do
-    $CUR_DIR/approve.sh $PRN
+    $CUR_DIR/approve.sh $PRN $REVIEWER_CHECK
     if [ "$?" -ne "0" ]; then
         echo "Merge failed, exit."
         exit 1
     fi
+    if [ -n "$REVIEWER_CHECK" ]; then
+        REVIEWER_CHECK=
+    fi
 done
-
diff --git a/scripts/label.sh b/scripts/label.sh
new file mode 100755
index 0000000000..c995ed9b0f
--- /dev/null
+++ b/scripts/label.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+PRN=$1
+MSG=$2
+LABEL=$3
+
+function check_label() {
+    local PRN=$1
+    local LABEL=$2
+    hub api repos/{owner}/{repo}/issues/${PRN}/labels | python -m json.tool | grep '"name": "'$LABEL'"'
+}
+
+function label() {
+    local PRN=$1
+    local MSG=$2
+    local LABEL=$3
+
+    for try in $(seq 3)
+    do
+        echo "Send $MSG ..."
+        hub api repos/{owner}/{repo}/issues/$PRN/comments -f "body=$MSG" > /dev/null
+        if [ "$?" -ne "0" ]; then
+            echo "Send $MSG fail!"
+            return 1
+        fi
+        for chk in $(seq 30)
+        do
+            sleep 1
+            if check_label $PRN $LABEL > /dev/null; then
+                echo "Label $LABEL success!"
+                return 0
+            fi
+        done
+    done
+    return 1
+}
+
+if [ -z "$LABEL" ]; then
+    echo "Usage: $0 <pr_number> <msg> <label>"
+    exit 1
+fi
+
+label "$PRN" "$MSG" "$LABEL"
diff --git a/scripts/lgtm.sh b/scripts/lgtm.sh
new file mode 100755
index 0000000000..5558bd2d4a
--- /dev/null
+++ b/scripts/lgtm.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+pushd $(dirname "$BASH_SOURCE") > /dev/null
+CUR_DIR=$(pwd)
+popd > /dev/null
+
+PRN=$1
+if [ -z "$PRN" ]; then
+    echo "$0 <PRN>"
+    exit 1
+fi
+
+$CUR_DIR/label.sh $PRN /lgtm lgtm