According to conditions of Laisteel product line， the high quality 36Mn2V tube billet for oil well pipe was successfully developed by adoptting the concentrated feed， fining craft measures and so on terminal process control （TPC）， strengthening deoxidation， continuous casting protection casting. On the basis of analysis about the factor of effecting the quality， we can work out the way to solve the problems， to enable the product composition homoge- neous， the remaining element content low， the oxygen content low， the inclusion few， and the crystal grain tiny， which met the requestment of oil industry well.