The utility model relates to a restoring die for an inner cover bulkhead. The utility model is composed of an inner die and an outer die, wherein, the inner die is composed of a plane connecting plate, a hemisphere-shaped inner template on the connecting plate, and supporting plates which are distributed in an equant mode between the connecting plate and the inner template; the outer die is composed of a soleplate, a hemisphere-shaped outer template, and supporting plates which are distributed in the equant mode between the soleplate and the outer template. When the deformed inner cover bulkhead is restored, the inner die and the outer die are respectively arranged inside and outside the bulkhead, and are heated and rectified by pressure after connecting with a 1800T hydraulic press so that the deformed inner cover bulkhead is well restored. The utility model has the advantages of low manufacturing cost, good restoring effect, easy stripping, short construction periods, and little influence for production.