As more importance is attached to physical education by the society, a variety of teaching aids and methods have been applied to physical education and also achieved remarkable results. Computer multimedia technology, as a frontier information technology, plays a decisive role in physical education and training. In this context, this paper analyses the effectiveness of computer multimedia technology in physical education. The research results show that computer multimedia technology has promoted the physical education significantly. This shall play a positive role in promoting the application of computer multimedia in physical education and training.