In the last few years, according to the unearthed historical data .The scholars substantiated that Emperor Xuanzong in Tanh dynasty had two clans Shatuo and Zhuye (朱邪) by name which belong to the ChuYue (處月) tribe, separately lived in the Bei-Ting (北庭) and xi-zhou (西州) area already. This conclusion was different from the before studies of the scholars, and different from the record at the history books too.Therefore, this research attempts to explain processes and the reason about Shatuo's history. In order to demonstrate a fact that was the Shatuo and the tribe have had the experience obtained the power of the leadership on the ChuYue tribe Successively.The research discovered that Five Dynasties official historian Zhang Zhao-yuan (張昭遠) has had concealed the historical truth from later generation readers when he records the history of Shatuo's ancestry. In order to scholars can not easy to know the truth till now. That was the reason of the Zhuye clan still selfcall Shatuo when they ran from Tibet away to the Tang border.