A method for adding a user of an electric lock includes receiving a temporary code; establishing a connection between a portable device of the user and the electric lock; inputting and transmitting the temporary code to the electric lock via the portable device; the electric lock determining if the temporary code matches a default password; inputting a user information of the portable device via the portable device when the temporary code matches the default password; and storing the user information in the electric lock, so that the portable device is allowed to drive the electric lock to perform an action.