In order to effectively improve the athletes' physical fitness and the management ability of sports information, the athletes' training information integration system based on wireless sensor network is designed. The hardware design mainly includes the information database module, the program loading module, the human-computer interaction module and the topology control model under the wireless sensor network environment, which constitute the basic architecture of the system and ensure the smooth operation of data storage, processing, interaction and network transmission. Through the multi-sensor information tracking model software, the accurate tracking of athletes' physical training information is realized; the feature coincidence model is used to de-duplicate the aggregated information, reduce the transmission and storage of redundant information, and combine with the transmission optimization coefficient to realize the multi-sensor integrated transmission scheduling of athletes' physical training information; The effective integration of multi-sensor information is realized by using the block fusion degree function and linear programming function. The experimental results show that the output gain of information integration reaches 98.277%, and the integration time is maintained at about 4 s, which has good practicability.