The slipper machining production has many problems, such as serious material waste, high scrap rate, low tensile strength and abrasion resistance.While the cold extrusion forming technology can solve these problems significantly. For the slipper has the thin-wall inner spherical structure, it can be cracked easily and deformed because of the residual stress and the springback of internal sphere and cylinder produced in extrusion process. Through simulation results of the QFORM-3D software, improving the experimental technology scheme，reducing mean stress, forming force and springback in actual forming effectually, the dimensional precision of inner spherical structure and rationality of structure design of the mold are guaranteed.