The invention discloses an aluminum alloy door sealing device for an automobile. The aluminum alloy door sealing device for the automobile comprises an automobile door and an automobile frame, the automobile door is located on one side of the automobile frame, moreover, a first hinge is movably arranged between the automobile door and the automobile frame, first sealing gaskets are movably arranged at the corners of the outer surface of the front end of the automobile door, an automobile window is formed in the upper end of the outer surface of the front end of the automobile door, moreover, asecond sealing gasket is movably arranged on the inner surface of the automobile window, a handle is fixedly arranged in the middles of the inner surface and the outer surface of the front end of theautomobile door, a door frame is fixedly arranged on the outer surface of the front end of the automobile frame, moreover, third sealing gaskets are movably arranged at the corners of the outer surface of the front end of the door frame, and convex gaskets are fixedly arranged on the outer surfaces of the front ends of the first sealing gaskets. According to the aluminum alloy door sealing devicefor the automobile, the sealing performance between the automobile door and the automobile frame and the sealing performance between an automobile window and a windshield can be improved, mounting ofthe sealing gaskets is firmer, moreover, water seepage is not prone to occurrence at the sealing gasket fixing positions, and sealing grooves of the sealing gaskets can be conveniently cleaned.