Abstract: using the methods of literature, video observation and mathematical statistics, this paper investigates and analyzes the gap between the achievements of women's net sports and the world rankings in 2003-2014 and 2015-2018. This paper discusses the main factors that affect the performance of women athletes at present, and puts forward some ideas to promote the sustainable development of women's tennis competitive strength in China. The results show:serving scores, receiving scores, offensive and defensive change ability, confidence and concentration adjustment ability, and physical reserve and recovery ability are the main factors that determine athletes 'athletic performance. Idea: Promote the development strategy innovation of the 2020 Tokyo Olympic Games, and provide guarantees for tennis training and competition from the national level; Set up an international team to introduce high-level professional tennis training and competition concepts; Strengthen physical fitness reserves before the game and actively restore physical fitness during the game; Strengthen the cultivation of professional quality of tennis players; Diversification training is an effective way to improve the success rate of reserve talents; Choose singles or doubles as the main direction of attack according to the state of physical competition.

Key words: professionalization, Women's tennis, Competitive strength