In order to control the grain size of Cu-15.0Zn-8.1Al shape memory alloy, the spark plasma sintering (SPS) technique was applied. The sintering processes were carried out under different atmospheres with a different powder size. The sintered bodies were denser under the Ar+4%H-2 gas atmosphere than under the 100% Ar gas. By using the small-sized powders, the fine microstructure with average grain size of 2-3mum was obtained. With the large-sized powders, the single martensitic phase was observed with the average grain size of 70similar to72mum. When the starting powders with different sizes were mixed, it is confirmed that the average grain size of the manufactured alloys was 15mum, but the distribution of grain size was not uniform.