Abstract: Resistance sintering under ultra-high pressure was developed to fabricate Mo-Cu alloys containing copper of 25%-75% in volume fraction. Consolidation was carried out under pressures of 2-10 GPa and an input power of 15 kW for 65 s. The densification effect and mechanical properties of these Mo-Cu alloys were investigated. The results show that these composites have high density and their mechanical properties are well. It is concluded that resistance sintering under ultra-high pressure is one of the fabrication methods which can avoid inhomogeneous structure and abnormal grain growth.