diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index 9f53c18f302b0086363c35e87322f622c45cff6e..8e81e4f3556fc70aeee1f85ff43e622dbe25dd3a 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -79,37 +79,12 @@ function cmake_base() {
     # Delete previous built whl packages
     rm -rf python/dist 2>/dev/null || true
 
-    # Support build for all python versions, currently
-    # including cp27-cp27m and cp27-cp27mu.
+    # Support build for all python3 versions
     PYTHON_FLAGS=""
     SYSTEM=`uname -s`
     if [ "$SYSTEM" == "Darwin" ]; then
         echo "Using python abi: $1"
-        if [[ "$1" == "cp27-cp27m" ]] || [[ "$1" == "" ]]; then
-            if [ -d "/Library/Frameworks/Python.framework/Versions/2.7" ]; then
-                export LD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/2.7
-                export DYLD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/2.7
-                export PATH=/Library/Frameworks/Python.framework/Versions/2.7/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
-            -DPYTHON_INCLUDE_DIR:PATH=/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
-            -DPYTHON_LIBRARY:FILEPATH=/Library/Frameworks/Python.framework/Versions/2.7/lib/libpython2.7.dylib"
-                pip install --user -r ${PADDLE_ROOT}/python/requirements.txt
-            else
-                exit 1
-            fi
-        elif [ "$1" == "cp35-cp35m" ]; then
-            if [ -d "/Library/Frameworks/Python.framework/Versions/3.5" ]; then
-                export LD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/3.5/lib/
-                export DYLD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/3.5/lib/
-                export PATH=/Library/Frameworks/Python.framework/Versions/3.5/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/Library/Frameworks/Python.framework/Versions/3.5/bin/python3
-            -DPYTHON_INCLUDE_DIR:PATH=/Library/Frameworks/Python.framework/Versions/3.5/include/python3.5m/
-            -DPYTHON_LIBRARY:FILEPATH=/Library/Frameworks/Python.framework/Versions/3.5/lib/libpython3.5m.dylib"
-                pip3.5 install --user -r ${PADDLE_ROOT}/python/requirements.txt
-            else
-                exit 1
-            fi
-        elif [ "$1" == "cp36-cp36m" ]; then
+        if [ "$1" == "cp36-cp36m" ] || [ "$1" == "" ]; then
             if [ -d "/Library/Frameworks/Python.framework/Versions/3.6" ]; then
                 export LD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/3.6/lib/
                 export DYLD_LIBRARY_PATH=/Library/Frameworks/Python.framework/Versions/3.6/lib/
@@ -161,42 +136,7 @@ function cmake_base() {
     else
         if [ "$1" != "" ]; then
             echo "using python abi: $1"
-            if [ "$1" == "cp27-cp27m" ]; then
-                export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs2/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.15-ucs4/lib:}
-                export PATH=/opt/python/cp27-cp27m/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27m/bin/python
-            -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27m/include/python2.7
-            -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.15-ucs2/lib/libpython2.7.so"
-                pip install -r ${PADDLE_ROOT}/python/requirements.txt
-            elif [ "$1" == "cp27-cp27mu" ]; then
-                export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs4/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.15-ucs2/lib:}
-                export PATH=/opt/python/cp27-cp27mu/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27mu/bin/python
-            -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27mu/include/python2.7
-            -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.15-ucs4/lib/libpython2.7.so"
-                pip install -r ${PADDLE_ROOT}/python/requirements.txt
-            elif [ "$1" == "cp27-cp27m-gcc82" ]; then
-                export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs2/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.15-ucs4/lib:}
-                export PATH=/opt/python/cp27-cp27m/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27m/bin/python
-            -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27m/include/python2.7
-            -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.15-ucs2/lib/libpython2.7.so"
-                pip install -r ${PADDLE_ROOT}/python/requirements.txt
-            elif [ "$1" == "cp27-cp27mu-gcc82" ]; then
-                export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs4/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.15-ucs2/lib:}
-                export PATH=/opt/python/cp27-cp27mu/bin/:${PATH}
-                PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27mu/bin/python
-            -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27mu/include/python2.7
-            -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.15-ucs4/lib/libpython2.7.so"
-                pip install -r ${PADDLE_ROOT}/python/requirements.txt
-            elif [ "$1" == "cp35-cp35m" ]; then
-                export LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH}
-                export PATH=/opt/_internal/cpython-3.5.1/bin/:${PATH}
-                export PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/_internal/cpython-3.5.1/bin/python3
-            -DPYTHON_INCLUDE_DIR:PATH=/opt/_internal/cpython-3.5.1/include/python3.5m
-            -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-3.5.1/lib/libpython3.so"
-                pip3.5 install -r ${PADDLE_ROOT}/python/requirements.txt
-            elif [ "$1" == "cp36-cp36m" ]; then
+            if [ "$1" == "cp36-cp36m" ]; then
                 export LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH}
                 export PATH=/opt/_internal/cpython-3.6.0/bin/:${PATH}
                 export PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/_internal/cpython-3.6.0/bin/python3
@@ -604,11 +544,7 @@ EOF
         set -x
 
         set +ex
-        if [ "$1" == "cp27-cp27m" ]; then
-            pip uninstall -y paddlepaddle
-        elif [ "$1" == "cp35-cp35m" ]; then
-            pip3.5 uninstall -y paddlepaddle
-        elif [ "$1" == "cp36-cp36m" ]; then
+        if [ "$1" == "cp36-cp36m" ]; then
             pip3.6 uninstall -y paddlepaddle
         elif [ "$1" == "cp37-cp37m" ]; then
             pip3.7 uninstall -y paddlepaddle
@@ -619,13 +555,7 @@ EOF
         fi
         set -ex
 
-        if [ "$1" == "cp27-cp27m" ]; then
-            set -e
-            pip install --user ${INSTALL_PREFIX:-/paddle/build}/opt/paddle/share/wheels/*.whl
-            python ${PADDLE_ROOT}/paddle/scripts/installation_validate.py
-        elif [ "$1" == "cp35-cp35m" ]; then
-            pip3.5 install --user ${INSTALL_PREFIX:-/paddle/build}/opt/paddle/share/wheels/*.whl
-        elif [ "$1" == "cp36-cp36m" ]; then
+        if [ "$1" == "cp36-cp36m" ]; then
             pip3.6 install --user ${INSTALL_PREFIX:-/paddle/build}/opt/paddle/share/wheels/*.whl
         elif [ "$1" == "cp37-cp37m" ]; then
             pip3.7 install --user ${INSTALL_PREFIX:-/paddle/build}/opt/paddle/share/wheels/*.whl
@@ -1741,70 +1671,38 @@ EOF
 
     ref_web=https://paddle-wheel.bj.bcebos.com/${PADDLE_BRANCH}-${ref_gpu}-${ref_mkl}
 
-    ref_paddle2=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp27-cp27mu-linux_x86_64.whl
-    ref_paddle35=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp35-cp35m-linux_x86_64.whl
     ref_paddle36=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp36-cp36m-linux_x86_64.whl
     ref_paddle37=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp37-cp37m-linux_x86_64.whl
     ref_paddle38=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp38-cp38-linux_x86_64.whl
     ref_paddle39=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp39-cp39-linux_x86_64.whl
 
-    ref_paddle2_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp27-cp27mu-linux_x86_64.whl
-    ref_paddle35_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp35-cp35m-linux_x86_64.whl
     ref_paddle36_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp36-cp36m-linux_x86_64.whl
     ref_paddle37_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp37-cp37m-linux_x86_64.whl
     ref_paddle38_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp38-cp38-linux_x86_64.whl
     ref_paddle39_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}-cp39-cp39-linux_x86_64.whl
 
     if [[ ${PADDLE_BRANCH} != "0.0.0" && ${WITH_MKL} == "ON" && ${WITH_GPU} == "ON" ]]; then
-        ref_paddle2=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp27-cp27mu-linux_x86_64.whl
-        ref_paddle35=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp35-cp35m-linux_x86_64.whl
         ref_paddle36=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp36-cp36m-linux_x86_64.whl
         ref_paddle37=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp37-cp37m-linux_x86_64.whl
         ref_paddle38=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp38-cp38-linux_x86_64.whl
         ref_paddle39=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp39-cp39-linux_x86_64.whl
-        ref_paddle2_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp27-cp27mu-linux_x86_64.whl
-        ref_paddle35_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp35-cp35m-linux_x86_64.whl
         ref_paddle36_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp36-cp36m-linux_x86_64.whl
         ref_paddle37_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp37-cp37m-linux_x86_64.whl
         ref_paddle38_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp38-cp38-linux_x86_64.whl
         ref_paddle39_whl=paddlepaddle${install_gpu}-${PADDLE_BRANCH}.post${ref_CUDA_MAJOR}${CUDNN_MAJOR}-cp39-cp39-linux_x86_64.whl
     fi
 
-    #ref_paddle2_mv1=""
-    #ref_paddle2_mv2=""
-    ref_paddle35_mv1=""
-    ref_paddle35_mv2=""
     ref_paddle36_mv1=""
     ref_paddle36_mv2=""
-    #ref_paddle37_mv1=""
-    #ref_paddle37_mv2=""
     if [[ ${PADDLE_BRANCH} == "0.0.0" && ${WITH_GPU} == "ON" ]]; then
-        #ref_paddle2_whl=paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl
-        ref_paddle35_whl=paddlepaddle_gpu-1.5.1-cp35-cp35m-linux_x86_64.whl
         ref_paddle36_whl=paddlepaddle_gpu-1.5.1-cp36-cp36m-linux_x86_64.whl
-        #ref_paddle37_whl=paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl
-        #ref_paddle2_mv1="mv ref_paddle2 paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl &&"
-        #ref_paddle2_mv2="&& mv paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl ref_paddle2"
-        ref_paddle35_mv1="mv ${ref_paddle35} ${ref_paddle35_whl} &&"
-        ref_paddle35_mv2="&& mv ${ref_paddle35_whl} ${ref_paddle35}"
         ref_paddle36_mv1="mv ${ref_paddle36} ${ref_paddle36_whl} &&"
         ref_paddle36_mv2="&& mv ${ref_paddle36_whl} ${ref_paddle36}"
-        #ref_paddle37_mv1="mv ref_paddle37 paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl &&"
-        #ref_paddle37_mv2="&& mv paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl ref_paddle37"
     fi
     if [[ ${PADDLE_BRANCH} == "0.0.0" && ${WITH_GPU} != "ON" ]]; then
-        #ref_paddle2_whl=paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl
-        ref_paddle35_whl=paddlepaddle-1.5.1-cp35-cp35m-linux_x86_64.whl
         ref_paddle36_whl=paddlepaddle-1.5.1-cp36-cp36m-linux_x86_64.whl
-        #ref_paddle37_whl=paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl
-        #ref_paddle2_mv1="mv ref_paddle2 paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl &&"
-        #ref_paddle2_mv2="&& mv paddlepaddle_gpu-1.5.1-cp27-cp27mu-linux_x86_64.whl ref_paddle2"
-        ref_paddle35_mv1="mv ${ref_paddle35} ${ref_paddle35_whl} &&"
-        ref_paddle35_mv2="&& mv ${ref_paddle35_whl} ${ref_paddle35}"
         ref_paddle36_mv1="mv ${ref_paddle36} ${ref_paddle36_whl} &&"
         ref_paddle36_mv2="&& mv ${ref_paddle36_whl} ${ref_paddle36}"
-        #ref_paddle37_mv1="mv ref_paddle37 paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl &&"
-        #ref_paddle37_mv2="&& mv paddlepaddle_gpu-1.5.1-cp37-cp37m-linux_x86_64.whl ref_paddle37"
     fi
     
     cat > ${PADDLE_ROOT}/build/Dockerfile <<EOF
@@ -1829,10 +1727,9 @@ EOF
     cat >> ${PADDLE_ROOT}/build/Dockerfile <<EOF
     # run paddle version to install python packages first
     RUN apt-get update && ${NCCL_DEPS}
-    RUN apt-get install -y wget python3 python3-pip libgtk2.0-dev dmidecode python3-tk && \
-        pip3 install py-cpuinfo==5.0.0 && wget ${ref_web}/${ref_paddle35} && ${ref_paddle35_mv1} pip3 install ${ref_paddle35_whl} ${ref_paddle35_mv2}; apt-get install -f -y && \
+    RUN apt-get install -y wget libgtk2.0-dev dmidecode && \
+        apt-get install -f -y && \
         apt-get clean -y && \
-        rm -f ${ref_paddle35} && \
         ldconfig
     ${DOCKERFILE_CUDNN_DSO}
     ${DOCKERFILE_CUBLAS_DSO}