The tracked steel's section is very complex.The phenomena of torsion and warpage often happen,which affects the tracked steel's rolling process.The finite element model of tracked steel's rolling process in the knifing pass was established.The influences of the pass parameters upon the rolled piece's torsion and warpage were studied.On the basis,the pass parameters were optimized.The study made the torsion angle reduce from 135.6° to 13.85°,which ensured the succeeding pass rolling processes.