The invention relates to molding techniques of film mulching sand molds of cast microspheres, cast steel and cast iron parts, and provides a mulching film sand mold unloading device which comprises a rack and a male mold, wherein the male mold is arranged on the rack. The mulching film sand mold unloading device is characterized in that a sand mold jacking mechanism comprises jacking rods for jacking a mulching film sand mold; the vertically arranged jacking rods are uniformly arranged in an area of a male mold plate surface and move up and down; a support and moving mechanism comprises a fork-shaped support plate; the fork-shaped support plate can respectively move in two position states of moving between the male mold and the mulching film sand mold in a lifting position, and supporting the mulching film sand mold to move to a side of the male mold. By adopting the mulching film sand mold unloading device, a high-temperature mulching film sand mold does not need to be unloaded manually, operation of handheld operation of operators is avoided, the production efficiency is improved, and meanwhile various dangers caused when the mulching film sand mold is loaded and unloaded manually are eliminated.