A method and system for implementing network device access management. The system includes at least one device domain storage unit and at least one Access Server (AS), and the method groups all network devices into at least one device domain managed by at least one AS; sets a uniform communication attribute for each device domain; determines, by the AS, whether a communication device belongs to the device domain managed by the AS according to information carried in a service request from the communication device, and if so, the communication attribute set for the network device is obtained, and a correspondence relationship between an identifier of the network device and the obtained communication attributes is created and stored; otherwise, access management on the communication device served as a user device is performed.