The present invention is an interactive processing method for selecting network information for a user terminal in a WLAN. After a radio connection between a WLAN user terminal and a WLAN AN is established, the WLAN AN or the WLAN user terminal initiates an authentication procedure, and the WLAN AN sends to the WLAN user terminal a user identity request message. After receiving the user identity request message, the WLAN user terminal returns to the WLAN AN a message containing network selection information, judges whether the network selection information in the received message identifies a wireless communication network connected with the WLAN, and, if yes, sends the authentication request of the WLAN user terminal to the wireless communication network identified by the network selection information. Otherwise, the network sends an advisement message to the WLAN user terminal, and the WLAN user terminal performs subsequent operations according to the contents of the advisement. This invention enables a WLAN user terminal to select an appropriate wireless communication network according to its need when the WLAN user terminal accesses a network via a WLAN connected with a plurality of wireless communication networks.