The simulated baseball movement is based on a large projection screen as the carrier, through the detection equipment to detect the movement of the experiencer and the ball's movement direction trajectory feedback to the computer, and finally the computer reflects the results and pictures on the large screen. The birth of indoor simulated baseball, it avoids the limitations of the venue, weather conditions, air quality and other factors, and also allows more people to easily access baseball sports. Indoor simulation baseball equipment, through the computer software to control the ball machine, the placement of each ball is accurate, and it can also be adjusted according to the students' own level, just like an intelligent computer coach is training with the students. Through the systematic baseball training mode in the computer software, an all-round improvement of tennis action is obtained. It has the characteristics of not being affected by weather and environmental factors, using small space and low operating cost. In addition to the increasingly busy urban life, simulation training can be carried out at any time.