The present disclosure relates to obtaining AP information or information on a channel where the AP is positioned from a neighboring mobile terminal that has recently performed AP scanning and re-attempting to scan based on the obtained information. According to an embodiment of the present disclosure, a method for scanning an access point (AP) in a wireless local area network (LAN) system comprises performing first WLAN scanning by a first mobile terminal, transmitting a request for WLAN AP information to a second mobile terminal that has previously performed WLAN AP scanning, receiving the WLAN AP information from the second mobile terminal, and performing second WLAN scanning based on the WLAN AP information.