In demand for the application of China′s space information, a simple-managing and controllable-cost space optical network was designed. The established circle backbone network based on MEO satellites was equipped with microwave access ability to realize the backbone-access integrated and optical-microwave hybrid space network system. Coverage capacity was also simulated. The implementation scheme by step which was proposed based on the combination of the characteristics of the GEO relay system and the LEO satellite as well will contribute to the space network system for global information transmission and application.