The present disclosure discloses a gas delivery hose hook, a ventilator support device and respiratory therapy equipment, wherein the gas delivery hose hook is applied to a gas delivery hose, the surface of the gas delivery hose is provided with a plurality of grooves which are arranged at intervals along the length direction of the gas delivery hose; the gas delivery hose hook comprises a body, a first hook body is connected to the body and provided with a first limit rib, and the first limit rib extends along an extension direction of the first hook body; at least one second hook body is connected to the body and is arranged at intervals with the first hook body, and two opposite surfaces of the second hook body are convexly provided with second limit ribs.