The invention discloses a positioning method, device, equipment and system. The method comprises the following steps: when the positioning equipment needs to be positioned, judging whether a current position of the positioning equipment needs to be updated or not; when the current position of the positioning equipment needs to be updated, starting a GPS positioning module of the positioning equipment; obtaining nearby Wi-Fi hotspot data of the current positioning equipment; uploading the Wi-Fi hotspot data to a positioning server, so that the positioning server obtains first position information according to the Wi-Fi hotspot data, and, when preset conditions are met, updates the current position of the positioning equipment according to the first position information and returns a command to stop GPS positioning; when the command to stop the GPS positioning returned by the positioning server is received, closing the GPS positioning module; and when second position information is obtained through the GPS positioning module, closing the GPS positioning module, and sending the second position information to the positioning server, so that the positioning server updates the current position of the positioning equipment according to the second position information. The positioning method, device, equipment and system provided by the embodiment of the invention has the advantage that positioning power consumption of the positioning equipment can be effectively reduced.