Topspin serve in jump has been the main power tool on serve of volleyball players. For coaches and players can know more about topspin serve in jump the writer try to analyze the characteristics of topspin serve in jump then discuss the technique in the kinematical theory of the Biomechanical of sport and writer's personnel experience and realization of volleyball games. Topspin serve in jump is different from normal service. it has characteristics such that high-point to hit ball, close to net, fast-ball speed, lower-curve to cross net and its placement is closer to net. Topspin serve in jump has been used generally in games and have the function on higher score rate and destroy the attack tactics of serve receiver organization. Therefore to understand technical movements of topspin serve in jump, to analyze its characteristics about movements and techniques will be more helpful in promoting the level of topspin serve in jump technique of our volleyball players.