The invention provides an operation system and an operation method for a communication network, wherein the operation system comprises an application platform, a service network platform and a bearing platform; the application platform comprises a communication network service module; the service network platform comprises a dispatching data network, a dispatching exchange network and an integrated data network; the dispatching data network is used for bearing dispatching data services and automatic services of a distribution network; the dispatching exchange network is used for bearing dispatching telephones; the integrated data network is used for bearing production and management information services, video conferences and soft exchange services; the bearing platform comprises a first transmission network and a second transmission network, wherein the first transmission network is used for bearing line protection, a security and stability system, a pulse code modulation PCM service and the dispatching data network; and the second transmission network is used for bearing line protection, the security and stability system, the dispatching exchange network and the dispatching data network. By means of the operation system and the operation method for the communication network provided by the invention, steady operation of the communication network can be realized; and furthermore, the communication network can be troubleshot in time.