Using pre-alloying Ta-W-Hf powder,Ta-W-Hf bulk alloys were prepared by means of CIP(cold isostatic press),HIP(hot isostatic press)and high temperature annealing.This paper is focused on the influences of HIP and high temperature annealing on the alloy performances.The results show that high strength,high hardness and low plasticity appear for the alloy after HIP at low temperature.The elongation and section shrinking would be largely improved and the strength would be decreased after HIP at high temperature or high temperature annealing due to the oxygen element's inhomogeneous distribution in the raw material particles and remaining in the bulk after HIP to form the hidden harden cell structures without phase change in these regions.These cell structures would disappear after high temperature annealing.