Using the servo oscillating reflector antenna based on the rotating paraboloid principle,one- tomany laser communication network can capture,track and communicate with the laser signal coming from multipoint optical transceiver so as to form the space laser communication network.The basic principle,architecture,tracking algorithm and the stitching technology of the servo antenna system are discussed.The rotating paraboloid principle is proved and the feasibility analysis of servo mirror antenna is given.It also introduces the closed-loop structure of tracking system and separately elaborates the component and index of the sensor,actuator,controller.Proportion integration differentiation (PID) algorithm with actuator limit,which is used for spot tracking,and debugging method are given.In order to achieve continuous tracking,the multi-reflector stitching technology is introduced,which mainly clarifies the implementation method of the reflectors.The whole servo antenna system is designed to test the perform range,tracking precision and stitching reliability.In the end,the qualification including 360° omnidirectional execution,tracking error less than 50 mrad and over 90% reliable stitching under indoor principle experiment can be achieved,which makes the laser communication network system operate normally .