Abstract: The double-pass compression experiment of pure Mo (PM7) with sintered density of 9.7-9.8g/cm³ was carried out by using MMS-200 thermal simulation machine. The influences of deformation temperature, deformation rate and interval time on the static recrystallization behavior of PM7 were studied, the condition of static recrystallization was analyzed, and the activation energy of static recrystallization was obtained. The result shows that the static softening rate curve of PM7 is S-type; with the increase of double-pass deformation temperature and the extension of interval time, the static softening rate increases; the static recrystallization activation energy of PM7 is 456.032 kJ/mol.