The system of indoor golf is mainly composed of software system, automatic return system, intelligent putter system, high-speed camera sensing system, and high-definition video system. The HD video system includes a projector and a screen. The indoor golf picture will show the direction and speed of the wind, as well as the slope of the green and the position of the flag pole, which is not much different from the factors considered in the outdoor field. When the user uses the real club to hit a ball, the screen will accurately display your high ball flight distance, takeoff Angle, left and right Angle, backspin, side spin, ball speed, club head speed and other data.