Michelson interferometer is an important instrument for measuring spectrum and material properties，which can directly demonstrate equal inclination interference，equal thickness interference and their mutual transformation． The dynamic evolution of equal inclination interference and equal thickness interference is simulated by MATLAB software．The virtual simulation experiment scene of Michelson interferometer is created by unity software． The MATLAB subroutine is embedded in the scene． By adjusting the boom，the moderate inclination interference fringes can be processed，and the equal inclination interference can be transformed into equal thickness interference and white light interference．The demonstration process of the interference change is intuitive and visual，which enhances the interaction between the user and Michelson interference virtual simulation experiment．