The invention provides a scene identification method and a scene identification system for a wireless network, which are applied to a terminal device. The method comprises the following steps: searching for an access point of a wireless network; receiving the identifier of the wireless network, and establishing a connection with the wireless network according to the identifier; calling the analysis rule of a preset scene, wherein the parameters of the analysis rule include multiple time periods and the connection ratio threshold scope of each time period; analyzing the connection law of connection to the wireless network, wherein the connection law includes the connection ratio in the multiple time periods; judging whether the connection law is in line with the analysis rule; and when the connection law is in line with the analysis rule, adding the connection law to the connection mode of the preset scene. By setting the analysis rule of a preset scene, the scene of a connected wireless network can be identified automatically. Preset scenes are screened, and potential safety hazard to WIFI access points in preset scenes is reduced.