Disclosed is a longitudinal-trimming heading compound regulating rudder for an air-propelled ship. The rudder comprises direction rudders arranged at the right rear portion of an air propeller on a ship body, the two direction rudders are connected with each other through transverse connecting rod and are symmetrically arranged and can swing left and right in the transverse direction of the ship body, and the direction rudders are rotatably connected with the transverse connecting rod; the two direction rudders are both provided with rotating shaft sections, the two ends of a transverse support rod are rotatably connected with the rotating shaft sections of the two direction rudders respectively, a cylinder body of an electric push rod is hinged to the transverse support rod, a push rod section of the electric push rod is hinged to a balance rudder, and the balance rudder is arranged between the two direction rudders and rotatably connected with the transverse support rod through a transverse rotating shaft. According to the longitudinal-trimming heading compound regulating rudder for the air-propelled ship, the heading and longitudinal trimming postures can be adjusted when the amphibious air-propelled ship sails on water and slides on the ground.