You can install GMS in this way.

1. Install GMS via adb
2. Restart the device and open GooglePlay and try to log in to your Google account.This is the step to generate the Android Id needed for the steps below
3. Get your Android Id
4. Register your device on "https://www.google.com/android/uncertified/"

Specific steps are as follows:

• Download the GMS.zip I uploaded and unzip it. It includes 3 folders(GoogleServicesFramework、Phonesky and PrebuiltGmsCoreRvc).Also you can download them on https://www.pling.com/p/1462970/
• Use the Adb tool to push the three folders to the device

#--------------------------install-----------------------------
#make the device can root;
adb shell setprop persist.sys.root_access 3;
adb root
adb remount
#push the folder into /system/priv-app
#For the specific push content, please refer to the decompressed content
adb push ~/GMS/Phonesky /system/priv-app/
adb push ~/GMS/GoogleServicesFramework /system/priv-app/
adb push ~/GMS/PrebuiltGmsCoreRvc /system/priv-app/
#-----------------------------end------------------------------

#------------------------uninstall----------------------------- 
#If you want to uninstall GMS, just delete the folder pushed into system/priv-app.
adb shell setprop persist.sys.root_access 3
adb root
adb remount
adb shell
cd /system/priv-app/
rm -r Phonesky/
rm -r GoogleServicesFramework/
rm -r PrebuiltGmsCoreRvc/
#-----------------------------end------------------------------

• Check if you pushed successfully

adb shell
ls /system/priv-app|grep Phonesky
ls /system/priv-app|grep GoogleServicesFramework
ls /system/priv-app|grep PrebuiltGmsCoreRvc

If the ls command outputs the content after grep, it means that your push is successful. If no information is displayed, your operation may have failed.

• Restart your device.

adb reboot

• After restarting, Gooplay will be installed, open your GooglePlay and press the login button.Sometimes you need to update GooglePlay before proceeding with this step. Click on the option in the upper right corner and select Update to update the corresponding component

• The follow page will appear,it means you should register your device.

• Use ADB tool to get and copy Android ID

adb root
adb shell 'sqlite3 /data/data/com.google.android.gsf/databases/gservices.db \\
    "select * from main where name = \\"android_id\\";"'

//Command execution result like this.Your Andoird ID is 40XXXXXXXXXXXXXXX7
android_id|40XXXXXXXXXXXXXXX7

• Login https://www.google.com/android/uncertified/ with your Google account and fill in the copied Android ID into the input box, click the register button

• After waiting for a period of time, restart your device, you can use Google Play and install APK normally