Preparation device for mashed potatoes with full-nutrient components

The utility model provides a preparation device for mashed potatoes with full-nutrient components. The preparation device comprises a shell, wherein the lower end of the shell is provided with an opening; the inner side of the opening end of the shell is movably connected with a layer of pore plate; through holes are formed in the pore plate; the outer side of the opening end of the shell is movably connected with a collecting tank; the shell is internally provided with a lead screw driven by a power unit; the lead screw is provided with a pressing plate matched with the lead screw and driven by the lead screw to vertically move; the pressing plate is matched with the upper end surface of the pore plate; the thickness of the pressing plate is larger than the distance from the bottom of the lead screw to the upper end surface of the pore plate; a feeding hole is formed in the side wall of the shell; and the position of the feeding hole is lower than the upper limit position of the pressing plate. The power unit drives the lead screw to forwards or reversely rotate, the lead screw drives the pressing plate to descend or ascend during rotating, cooked pachyrhizus erosus or sweet potatoes are downwards pressed by using the pressing plate and are converted into mashed potatoes through the through holes in the pore plate so as to enter the collecting tank, and the collecting tank and the pore plate can be taken down, so that pore plates with different-sized through holes can be replaced according to different product requirements.