A microstructure control method of the Ni-scandia-stabilized zirconia (ScSZ) cermet anode support, which is used for a low temperature solid oxide fuel cells prepared by low temperature processes for fabrications of electrolyte film and cathode electrode, was studied. In this study, addition of Polymethyl methacrylate (PMMA) powder as a pore-former and changing the sintering temperature were conducted to change the microstructure of the Ni-ScSZ cermet anode support. Effects of the size and the amount of the PMMA powder particle and the sintering temperature on the sizes of Ni particle, ScSZ particle and pore were investigated. The pores were classified into three kinds depending on the origin. Effects of the amount and size of the PMMA powder particle and the sintering temperature on the size and volume of the three kinds of pores were also examined.