With the increase in global talent flow, overseas brain return as one of the important channels for international technological spillover has been attracted more and more attention. This paper makes a literature review of motivation and technological spillover effect of overseas brain return. It finds that there are few research literatures on technological spillover effect from the perspective of human capital flows, especially overseas brain return. In addition, there are also few studies on motivation and different technological spillover effects of overseas brain return on the basis of the heterogeneity of human capital. Therefore, the studies on these aspects will be an important research direction in the future.