Abstract: The course content of mechanical wave in college physics is theoretical and abstract. APP Designer of Matlab was used to realize the graphical user wave interface of plane harmonic wave propagation, the principle of waves' superposition, interference and standing waves. Dynamic display of plane harmonic wave propagation, superposition, interference, standing wave and other images, solves the problem that traditional teaching method is difficult to realize dynamic in visual teaching, which shows the superiority of Matlab in college physics visual teaching.

Key words: Matlab APP designer, College physics teaching, Visual teaching, Mechanical wave