A method for addressing and locating WLAN communication node is disclosed in the present invention. The GSM or CDMA, which is characterized in broad coverage, the steadiest performance, and the most mature technology, is employed to confirm the subscribers' IP address. One of the communication parties sends data call to another party through GSM or CDMA and transmits the preset information package including the IP address of the calling party, which is processed by the system, to the other party. Then both parties can accomplish the WLAN interconnection based upon the known IP address in the WLAN. The method can also be applied to all the end-to-end communication system for addressing. The present invention relates to the mobile terminal adopting said method. The method can confirm the address information of the WLAN communication node conveniently, and rapidly, thereby decreasing the cost of communication, eliminating or lowering the dependence on the server of Internet so as to make the subscribers communicate more flexibly and conveniently.