AnalyzedandstudiedthecharactersofhighstrengthlowalloysteelwhichcontainMo,Cr,NbandNi.etc.Followingactualrolling,combiningthefeatureofrollingmode,andexploitingtheequipmentadvantageof5mHeavyPlateMill,optimizedthematerialdesign,heatingtemperatureandrollingmethod,stabilizedrollingprocessofthinalloyedsteel,thequalityindexwasadvanced.