This paper discusses the application of audio-visual language in the production of college teaching competition class,and puts forward the specific methods and case analysis of implementing audio-visual language strategy.The article first defines the concept of audio-visual language and emphasizes its key role in modern teaching.Then,it analyzes the importance of audio-visual language in the production of micro-lessons in college teaching competitions,and points out that it can enhance the attraction and participation of micro-lessons and optimize the effect of knowledge transfer and understanding.The article also introduces the specific strategies of integrating audio-visual language,such as the use of visual and audio elements,the use of lens language narrative skills and the use of plot strategies,which not only help to improve the quality of teaching,but also stimulate students'interest in learning,and provide valuable guidance for educators.