Sr-La-Co M-type ferrite fine particles were prepared by mechanical compounding (MC) method using the planetary ball-mill and subsequent heat treatment. This experiment was carried out to investigate the magnetic properties of Sr-La-Co M-type ferrite magnets prepared by spark plasma sintering (SPS) method using powders made by the MC method. The optimum condition of making SPS magnet, and some properties of a typical specimen are as follows: chemical composition, SrO.6.0Fe 2 O 3 ; additives, 1.0wt% La 2 O 3 and 0.1wt% Co 3 O 4 ; pressing pressure, 50MPa; sintering condition: 1100 o Cx5min. Magnetic and physical properties are B r =0.323T, H c J =325kA/m, (BH) m a x =18.3kJ/m 3 , and density=5.15Mg/m 3 .