The invention discloses a wireless automatic greenhouse ventilation system, which relates to the field of greenhouse ventilation. There is a membrane body, one end of the membrane body is fixed to the installation frame, and one side of the installation frame is provided with a vent, and the film roll mechanism, cooling mechanism, driving mechanism and control mechanism are installed on the installation frame, and the cooling mechanism and The film rolling mechanism is connected with the driving mechanism through transmission; the driving mechanism includes an electric cylinder fixed on the hollow horizontal plate. In the present invention, through the setting of the second ring gear, the second bevel gear, the driving motor, the fourth bevel gear, the first bevel gear, the threaded rod, the lifting plate, the gear, the rack, the pulley and the rolling film roller, it can Automatically roll up and rotate one end of the opposite membrane body, so that the vent leaks out, which is convenient for ventilation and heat dissipation, and does not require manual processing.