W-30Re heavy alloy was prepared by spark plasma sintering (SPS) technology. The effects of sintering temperature on density, hardness, microstructure and fracture mode of the alloy were investigated. Results show that the SPS technique could prepare W-30Re heavy alloy with fine grains and homogeneous microstructure in a relatively short period of time. With the increase of sintering temperature, the density and hardness of the sintered alloy always increase, and the number of binder phases in the alloy increases. The fracture mode of the alloy transfers from typical brittle intergranular fracture to more and more cleavage fracture and ductile tearing of binding phase