The invention discloses a cloud computing-based communication resource management system, which comprises a primary subsystem, a plurality of secondary subsystems and a plurality of tertiary subsystems. The primary subsystem comprises a primary management center and a primary management site. Primary equipment is arranged in the primary management site, and is maintained by the primary management center. Each secondary subsystem comprises a secondary management center and a secondary management site. Secondary equipment and sub-primary equipment are arranged in the secondary management site, and are maintained by the secondary management center. Each tertiary subsystem comprises a tertiary management center and a tertiary management site. Tertiary equipment, sub-secondary equipment and lower-grade sub-primary equipment are arranged in the tertiary management site, and are maintained by the tertiary management center. The plurality of tertiary subsystems are connected with the corresponding secondary subsystems by interconnect interfaces respectively. The secondary subsystems are connected with the primary subsystem by the interconnect interfaces. The cloud computing-based communication resource management system solves the problems of data dispersion and the generation of information islands.