The paper is to discuss the design content of automatic lap counting system for track events based on wireless data transmission. Starting from the current situation and existing problems of automatic lap counting system for track events, this paper discusses the common problems of automatic lap counting system and discusses how to establish automatic lap counting system for track events based on wireless data transmission from RF technique and wireless cluster network design. It is found from practice that, the automatic lap counting system established based on the integrated processing of the above two technologies can effectively meet the lap counting demands of all track events and has higher application value. It follows that, wireless data transmission technology has higher practical value in the design of automatic lap counting system for track events, and in-depth research should be made on it in future system design.