The invention belongs to micro aerial engine assembly technology and relates to an improvement on a micro aerial engine rectifier component runner surface cleaning method. The method includes combining a rectifier component, performing shot blasting treatment and cleaning. A cleaning clamp is composed of a clamping bolt pair (1), an upper cover plate (2), a lower cover plate (3), a clamping ring (4) and a jacking bolt (5). By the method, cleaning effect is guaranteed, cleaning time is shortened, and cleaning efficiency is improved.