Abstract: The transformation behavior of titanium high strength steel during continuous cooling was investigated by means of Gleeble-1500 thermomechanical simulator.The CCT curves under deformed and undeformed conditions were obtained by way of thermal dilation and metallography.The hot-rolled practicability of this steel was analyzed using CCT curves.The transformation of ferrite and pearlite are accelerated through high temperature deformation and transformation of bainite is retarded,so the transformation range of ferrite increase.The bainite transormation start temperature is relatively low,which provided a coiling zone above this temperature.These special features provide a basic condition for production of hot rolled titanium high strength steel.