110m hurdles is composed of each stages of time, the faster the time short speed, the faster the shorter time, through the literature method, image analysis, comparative analysis and logical analysis of the 2023 national track and field championships (Quzhou station) three men 110m hurdles event before the final speed change analysis, athletes can intuitively see their speed change, clear need to further improvement, also for coaches sports training design data feedback, help athletes improve performance. The results show that the speed distribution mode of the athletes meets the technical requirements, and the maximum speed reaches the level of the world excellent athletes, but the response of the athletes is slow, the maximum speed between the hurdles is small, and the rear force needs to be improved.