A method, an apparatus, and a system for collecting information about a WLAN AP are described. The method includes: a user equipment receives WLAN AP request information from a base station in a Minimization of Drive Tests (MDT) measurement configuration process, collects WLAN AP information according to the WLAN AP request information, and sends the WLAN AP information to the base station, wherein the WLAN AP request information is used to request the UE to report WLAN AP information. In the technical solutions provided in the embodiments, by using an MDT measurement configuration process, a UE may collect and report WLAN AP information based on architecture of a mobile communications network. In this way, WLAN AP information can be conveniently collected.