Dynamical Evolution of Kuiper Belt Objects

Kuiper belt is a region in our solar system beyond the Neptunes orbit, where lots of objects have been observed since 1992. The study of the Kuiper belt is important for our understanding of the dynamical evolution of the solar system. In this paper we review the current knowledge on the dynamical evolution of objects in the Kuiper belt. Emphasis is paid on the mechanisms proposed recent ly in the literature to explain the distributions of the Kuiper belt objects. Some open problems are also listed in the final of the paper.