The High-pressure torsion(HPT)deformation of sintered pure tungsten was carried out under low temperature condition. Recrystallization microstructures and behavior of pure W during the subsequent heating was analyzed under different torsion turns, which using a variety of detection and calculation methods such as EBSD, XRD and DSC. The results show that the deformation storage energy of pure W increases and the activation energy decreases after HPT deformation, but the recrystallization temperature is still high. Relative to obvious grain growth of the original sintered structure, recrystallized microstructure produced by HPT deformation is still small after DSC testing. The average grain size is about 4-6 μm. With the tortsion turns increases, grain size did not change significantly and deformed tissue is relatively stable.