Abstract: For the spatial target monitoring, the sensor resources are independent of each other, the early warning resources are not used effectively, resulting in insufficient space target detection time and low detection accuracy. A multi-radar mission planning method for spatial target cooperative detection is proposed. Multiple radar sensor resources are used to collaboratively detect spatial targets, and finally the purpose of accumulating enough multi-turn effective detection data for cooperative detection in a short time is achieved. Key technologies such as task target analysis, resource grouping, detectability analysis and arc filter allocation are analyzed, and the methods for solving the problems are specifically explained. With this mission planning method, radar resources can be saved while solving the above-mentioned space target detection problem.