Aiming at the problem that the existing speed measurements system are expensive and the velocity measurement method can not be directly used for the ball speed measurement, an embedded speed measurement system based on TMS320C6748 is designed, which includes image acquisition, data processing and digital display. The video sensor records the movement of the ball in the course, the video decoder chip converts the analog input to the digital image output and passes it to the DSP, the center and radius of the target sphere are calculated and the speed of the ball is outputted through the digital tube.This system has the characteristics of low cost, simple installation and wide adaptability.The experimental result shows that the system can obtain the actual velocity of the ball in a limited accuracy range, and the velocity error is less than 8.3%.