For numerical analysis of multiphase flow, each interface boundary should be captured, and the geometric deformation of the interface needs to be predicted. In a way to predict the interface, the singular interface model and diffusion interface model are used. Among them, the lattice Boltzmann method has adopted the diffusion interface model, which is easy to simulate complex multiphase flow phenomena such as bubble collapse, droplet collision, and moving contact lines. In this paper, a lattice Boltzmann method for the simulation of multiphase flows is described, and some test results for the validation are presented.