Air-entraining covering cap

The utility model discloses an air-entraining covering cap, and relates to an airframe mechanism. The air-entraining covering cap can solve the problems that an existing air-entraining covering cap is prone to damage, high in cost and poor in reliability. The air-entraining covering cap is arranged in an air-entraining port of an airplane body and comprises a fixing frame and an air filtering piece. An annular groove is formed in an inner side frame body of the fixing frame, the air filtering piece is fixedly installed in the annular groove, and the fixing frame is fixedly arranged in the air-entraining port. The air-entraining covering cap further comprises at least one first supporting beam fixed to the fixing frame in a crossing mode and located on the side, close to the air-entraining port, of the air filtering piece to support the air filtering piece so as to protect the air filtering piece against damage. The air-entraining covering cap can be used for airframe structural design.