WiFi (Wireless Fidelity) positioning method and WiFi positioning platform

The invention discloses a WiFi (Wireless Fidelity) positioning method and a WiFi positioning platform. The WiFi positioning method comprises the following steps of when WiFi hot spot scanning information acquired by a user terminal in the positioning process is received, extracting a WiFi data set {Wi} included in the WiFi hot spot scanning information, wherein the Wi is an identifier of an i-th WiFi hot spot scanned by the user terminal, i is more than or equal to 1 and is less than or equal to N, and N is the total number of the WiFi hot spots scanned by the user terminal; updating the topological record information of the Wi, and performing weighted average on coordinate information corresponding to each WiFi hot spot identifier in a WiFi relevant hot spot set of the topological record information of the Wi to obtain the coordinate information of the Wi; averaging the coordinate information of each WiFi hot spot identifier in the WiFi data set to obtain the position coordinate information of the user terminal. By utilizing the statistic topological structure of WiFi hot spots, the random disturbance to the user terminal in the receiving process of a WiFi signal can be effectively shielded, so that stable and high-accuracy WiFi positioning service can be provided for a user.