The invention relates to automatic manufacturing equipment, in particular to special complete equipment for automatic spraying of an automobile speed reducer cover plate. The special complete equipment for the automatic spraying of the automobile spare part comprises a workbench, a conveying belt for conveying the speed reducer cover plate, a pneumatic spraying mechanism for achieving multipoint spraying, a servo spraying mechanism for achieving track spraying, a first tool fixture for fixing the speed reducer cover plate and a second tool fixture for fixing the speed reducer cover plate; the conveying belt is fixedly connected with the workbench; in the conveying direction of the conveying belt, the first tool fixture and the second tool fixture are sequentially arranged above the conveying belt; the pneumatic spraying mechanism is matched with the first tool fixture; and the servo spraying mechanism is matched with the second tool fixture. The special complete equipment for the automatic spraying of the automobile spare part is good in manufacturability, adopts full-automatic assembly line unmanned operation, and is good in spraying effect and high in machining efficiency.