Abstract: In this paper, a dynamic estimation and compensation algorithm for matching the error characteristics of multi-sensor system is proposed to solve the engineering application problem of the multi-sensor system error estimation in the non-cooperative target scenario. A real-time estimation model of system errors is established and a dynamic iterative estimation and compensation algorithm is designed, which makes the error characteristics of the original plot and the fusion track to be consistent, overcomes the difficulty of plot-track association in the multi-sensor system, and ensures the correctness of relative system error estimation and compensation. The measured data from multiple scenes of different devices show that this method can improve the accuracy and stability of multi-sensor fusion system, so as to improve the plot quality of multi-sensor fusion system.