Abstract: A mold for making a shoe body in a process of injection foam molding is disclosed and includes a base; a lower mold body on the base; an upper die together with the mold body to form a mold cavity; an opening mechanism; a cover on the die and secured by the opening mechanism; a cooling plate under the mold body; and a platen pressed onto the cover. Pressurized gas is supplied from a first source to the cavity, molten materials from a second source are forced into the cavity to mix with the pressurized gas, after feeding a predetermined amount of the molten materials to the cavity, the first and the second sources are deactivated for releasing the pressurized gas, and the molten materials expand to shape and produce the finished shoe body.