SIGSO (Slightly Inclined Geostationary-Satellite Orbit) satellite communication system has rich frequency resources. Spread spectrum communication can make up power constrained via frequency bandwidth, which can improve reliability and security of system. In this paper, we put forward a system structure and system resource management strategy and allocation method which is very suitable for SIGSO satellite communication network. The channel of satellite is defined a combination of four resources (Quad) composed of satellite, frequency, power and spread spectrum code. The frequency bandwidth is designed and resource is dynamic allocation management in processing.