Post-treatment method of thin-wall component

The invention relates to a post-processing method for a thin-wall component. The post-processing method comprises the steps that the thin-wall component manufactured through an additive manufacturing technology is obtained, and the phase change temperature of the thin-wall component is measured; at least one thin-wall component is placed in a container containing the granular materials, and the outer surface of the thin-wall component is covered with the granular materials; pressurizing and heating the container in an inert gas environment; when the temperature is close to and smaller than the phase transition temperature and the pressure is increased to preset pressure, the container containing the thin-wall component is subjected to heat preservation and pressure maintaining; and cooling and pressure relief are conducted on the container containing the thin-wall component, and the thin-wall component which is higher in density and of which the microscopic structure is regulated and controlled is obtained. A