Based on the interactive and color display capabilities of Python software, a simulation platform for Young's double slit interference and difliraction experiments was designed. The platform is an EXE file withuniversality and convenienee. The user platform interface achieved adjustable experimental parameters andpresented the law of interference and diflraction fringes changing with various parameters. By controlling parameters through interactive operations for dynamic simulation, the real experimental process can bevisualized, which provides assistance for the teaching of optical part in physics.