Quick Help
Very easy to do this:
1、Your device must be in USB Debugging mode. To turn it on, go to Settings > Applications > Development and check the box.(Look Here)
2、Connect your device to your PC, Run UnlockRoot.exe,
3、Click “Unlock Root”, Enjoy!
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Note:You need to install your device's driver on your pc before do this。
The Unlock Root tools interface:

Auto-Detection your devices:

Rooting your devices:

Install Power Saver to save the battery for you(Recommend):

After get ROOT Permissions,To take effect after restart the phone。

After reboot your devices already have root access permissions: