Disclosed is an aluminum base sintered material, in which said material comprises base powders 2 of an aluminum or an alloy thereof and numerous endless passages being formed by pores connected to each other, said pores intervening between said base powders 2 adjacent to each other, and in which said material is provided with bridging portions 3 for interconnecting said base powders 2 adjacent to each other, said bridging portions 3 having therein an eutectic structure with a hyper-eutectic compounds and with a containment of the eutectic element and the balance of aluminum.