Aiming at the problem that the traditional education can not meet with the learning of computer science, this paper studies on the micro class teaching resources of computer application basis based on wechat. Firstly, it analyzes micro class and wechat platform in detail. Secondly, it studies on the teaching resources from students' status, needs and the function of micro class teaching. Finally, the effectiveness of micro teaching is verified through comparison. Experiments show that the micro class teaching based on wechat is better than the traditional teaching method.