The embodiment of the invention provides a method for assigning user identities and an operator device. The method includes: the operator device gets the connection information of the user side device; the operator device assigns the user identity to the user side device according to the connection information; the operator device sends the user identity to the user side device. In the above technical proposal, the operator equipment can be responsible for assigning user identities to the user side devices. In this way, it is convenient for operators to manage the user side devices. The connection can include physical connection and / or virtual connection. In addition. The user identity is assigned by the operator, and the user will use the user identity directly when the user uses the user identity to manage the user side device. Therefore, it is difficult for users to modify the user ID, thereby improving the security of user identification.