In recent years，there is intense interest in Chinese students studying abroad choosing to return to their home country. More and more talented students have chosen to return to China seeking better development opportunities for their careers，and the number of the returnees is increasing steadily. At the same time，the returned students are still in the “unstable” status，and there is a phenomenon of returnees returning back to overseas again and this is called as talent circulation. The object of this study is trying to continuously improve the competitiveness of China in attracting talented people and improve the competitiveness for keeping talent in this circulation. In this paper，we have studied the talent circulation for understanding this root of cause in order to put forward sound policies and suggestions to further optimize the international talent circulation and enhance the attractiveness to the overseas talents for mainland China.