Method of update lists

A method of update lists is provided. The method is suitable for updating an access point list and a client list of an access point of a network system. The method includes following steps: initiate the access point list and client list; when the access point is not busy opening a scan procedure to read the communication information of other access point(s), then recording and updating the communication information of other access point(s) to the access point list; when the access point is detecting a client trying to join the network system, running an authorization verifying procedure to read the communication information of the client, then recording and updating the communication information of the client to the client list. The present invention can provide the user to know the channel information of less interference, and also to manage had connection client(s) and the desiring connection client(s).