The utility model discloses an overlay type airport snow-preventing device. The key point of the technical scheme of the utility model is that the overlay type airport snow-preventing device mainly consists of a framework fixed end, a frame movable end and a covering layer, wherein the framework fixed end comprises a vibration motor, a spring, an elastic rope, an electric telescopic supporting rod, a wheel and a fixed disc; the framework movable end comprises a motor, a winding shaft, a bearing, a drive wheel and four auxiliary wheels; a locking ring matched with an elastic ring fixing ring is arranged on the covering layer; the locking ring is locked with a fixing ring for fixing the covering layer on the elastic rope. According to the overlay type airport snow-preventing device disclosed by the utility model, snow clearing and removing difficulty of an airport runway is lowered, snow clearing efficiency of the airport runway is improved, snow clearing workload of the airport runway is reduced, and manpower and material resources are saved.