The root is very simple, just download the KingRoot.apk from here And follow the steps below! And you’re done! Congratulations, You have a rooted Doogee X5 Pro device !
1.Download Kingroot.apk from the link above to your DOOGEE X5 PRO .
2.Start the Kingroot.apk and to install the app.
3.Start Kingroot, the app which you installed, and click the Verify / Root button.
4. Wait, it can restart the phone (No problem!), But in this case just start Kingroot app and continues the rooting.
5. In case the root failed (this was the first time for me)click the Root button in the Kingroot app again!