Abstract: In order to solve the serious shape problem of brass plate by Mino six roll UC mill. The factors for poor shape, high roll bending force and high work hardening of C2680 sheet with width of 650 mm are analyzed. The results show that the shape of wide brass sheet can be dramatically improved by controlling rollers precision, intermediate rolls position and rolling process. Controlling the rollers precision is applied to guarantee the eccentricity ratio to be lower than 0.01 mm. The value of intermediate rolls position is about two times as processing rate, which ensure the hardness of raw materials to be lower than 70 HV. The deformation resistance can be decreased by improving the quality of shape of brass sheet and eliminating work hardening imprints.