A kind of multi-parameter tracking effect evaluation system based on trajectory is presented. Firstly, the principle and mode of target miss distance interpretation are expounded. Then the structure of tracking effect evaluation system is designed, which consists of image interpretation module, tracking effect evaluation module and result display module. Then the evaluation model of target tracking effect is established, which includes five parameters: trajectory difficulty, tracking error, tracking stability, equipment field of view, and tracking time. The system interprets the task video image acquired by the optical measuring equipment, and then transmits the interpreted data to the tracking effect evaluation module for processing and analysis, and evaluates the tracking effect according to the score of the evaluation model. Finally, the system test is carried out, which shows that the system can scientifically evaluate the tracking effect.