Abstract: Taking space attack and defense as the application background, the active and passive space-based laser detection technology was deeply researched. The related situations of research on LIDAR and laser warning in space-based platform at home and abroad were briefly described. On this basis, the framework design of active and passive laser detection technology based on space-based platform was developed, the components and their functions were discussed, and the involved key technologies such as laser transmitting-receiving, light beam scanning, laser warning were deeply analyzed.