Abstract: The new SmartCrown profile and flatness control technology was first adopted in a wide strip tandem cold rolling mill. Through studying on the function structure and characteristic parameters, this paper deduced a way to determine the SmartCrown work roll contour. The effect of roll contour characteristic parameters on the roll gap profile was further analyzed. This study is important to the grind of the work roll contour, the control of strip shape and the spread of SmartCrown technology.