Make mechanics analysis on ball force status and movement states in table tennis process, and apply dynamic theory and fluid mechanic theory describe ball mechanic features. Analyze table tennis operation process as well as horizontal and vertical directions joint forces and angles, and get strength angle mathematical model. Make expansion on model, considering loop in table tennis, establish table tennis dynamics simulation model, and based on that add buoyancy force and additional mass force, establish improved table tennis simulation model, get conclusions that strong rotation speed loop can effective control flight distance and make high speed moving table tennis drops to opponent court.