[en] Since the end of last century, the size of integrated devices has become smaller and smaller and semiconductor industry had been experiencing great challenge on Moore law. New materials and technology in semiconductor industry had become significant in the development in network communication and auto control. Finding new materials with excellent electronic natures other than silicon had been a hot spot of the research. With the discovery of Graphene, two-dimensional material system becomes important in the research. Study the optical and electronic properties of two-dimensional materials, especially the carrier mobility, which can help to design proper two-dimensional materials. This paper introduces how the theoretical computation of the mobility for two-dimensional materials was developed. Specifically, the Bloch theorem, density functional theory, the first-principle calculation and deformation potentials theorem. (paper)