Using the uniqueness of the ID of the distributed base station RRU device in the mobile network to make fine manage for the project construction, network maintenance, and fault handling, can solve the confusion caused by the separation between BBU and RRU, leading to unable to determine the network element port and its location. This paper introduces the method of fine management of distributed system from operation and workflow, and uses Huawei GSM network and ZTE WCDMA network as an example to demonstrate the method. It can be also applied to the management of similar networks including LTE networks. Because of its full use of existing equipment, network management and other resources, and it has high practicality and operability, it also can greatly shorten the time to determine the location of the network element, therefore enhances the work efficiency of engineering staff and network maintenance staff, and saves manpower and expenses for operators.