Abstract: Throught the measurement of property index of tensile strength,yield strength,hardness,elongation,reduction of cross-section area and impact strength,we studied the influence of the ingredient of sulphur on organization capability and application in the non hardened-tempered 12Mn2VBS steels.When the element of sulphur was suitable,we knew that the elementary capability of non hardened-tempered 12Mn2VBS steels may attain the basical requirement of industry application.