Provided is a method and system for collecting access point information in linkage with a mobile card payment system to measure a location of a user using an access point of a wireless local area network (WLAN) service. The method may include (a) receiving payment information relating to a mobile communication terminal from a card company server, (b) transmitting an access point information collecting control signal to the mobile communication terminal based on the payment information, (c) receiving access point information collected by the mobile communication terminal in response to the control signal, and (d) storing the received access point information in a storage means.