The invention relates to a regulation method for a pore structure of laminated porous alumina ceramics and belongs to the field of porous ceramic materials. The method comprises the following steps: a sintering aid nano-powder is mixed into an alumina suspension, and an alumina suspension mixed with the sintering aid is obtained; the alumina suspension is fed into a polytetrafluoroethylene container with the wall thickness being 5 mm, then the container is placed on a metal block, the lower half part of the container is immersed in a refrigerant, oriented refrigeration is performed on the alumina suspension mixed with the sintering aid through heat transfer of the metal block until the suspension is frozen completely, an ice cube containing ceramic particle assemblies is dried and deiced under the conditions that the temperature is lower than subzero 18 DEG C and the pressure is lower than 600 Pa, a laminated porous alumina ceramic body is obtained and sintered, and the porous ceramics are prepared. According to the regulation method, pore structure features such as the width of laminated pores of the porous ceramics, pore wall morphology and the like can be regulated quite conveniently through selection of the category of the sintering aid and the sintering temperature, and application requirements of various fields can be met.