The invention relates to an inhalation therapy apparatus comprising an aerosol generating device (1, 6, 7) for atomizing a liquid (3), a connecting device (8, 9) for supplying a control signal, and a control device (10) from which a control signal of the connecting device can be supplied to the aerosol generating device whereby causing the aerosol generating device to atomize the liquid. To this end, an output signal, which is elicited by the breathing of the patient on the connecting device (8, 9) of the aerosol generating device (1, 6, 7) is supplied to the control device (10) for controlling the inhalation therapy apparatus.