Abstract: Based on the thermo-mechanical control process (TMCP), taking the economical P110 petroleum casing steel 30MnCr22 as the research object, a double-pass thermal compression experiment was carried out on the Gleeble-1500D thermal simulation test machine, and the true stress-true strain curve under different deformation conditions was measured, and the high-temperature static recrystalstallization law was studied.The results show that with the increase of deformation temperature, times between double passes, strain and strain rate in the thermal deformation process, the volume fraction of static recrystallization of 30MnCr22 steel increases, which is more prone to static recrystallization.The true stress-strain curves under various deformation conditions were analyzed by Origin software, and the static recrystallization kinetic model of 30MnCr22 steel was established by linear regression method.The recrystallization control strategy of 30MnCr22 seamless steel pipe under TMCP condition was analyzed combined with the law of its static recrystallization.