In the present study, a MnCu-based damping alloy with a nominal composition of Mn25Cu2Al was produced by ball milling and spark plasma sintering. The phase composition, microstructure, compactness, micro-hardness, damping capacity of these materials were systematically investigated. Experimental results show that the ball milling mixed particles are mainly composed of ¡-Mn and £-Cu. The microstructure of the alloy sintered at 730°C is mainly composed of £-MnCu, £-CuMn and ¡-Mn. With the increase of sintering temperature, £-CuMn and ¡-Mn gradually disappear by the mutual diffusion of Mn and Cu elements. During 850°C sintering, the alloy is mainly single £-MnCu solid solution. At the same time, as the sintering temperature increases, the compactness and damping capacity of the alloys increases and the micro-hardness decreases.