The utility model discloses a rectifying device for strip steel twisting and deviating, the device has a minimum effect upon the quality of the strip steel surface, and comprises a deviation rectification roll and a moveable adjusting device connected with the deviation rectification roll, the deviation rectification roll is of a columnar shape, the central section diameter of the deviation rectification roll is the minimum, while the end diameter is the maximum, the diameters in the transition region between the central section to the end gradually increase. The deviation rectification roll comprises an upper deviation rectification roll and a lower deviation rectification roll opposingly disposed, the moveable adjusting device comprises an upper moveable adjusting device connected with the upper deviation rectification roll and a lower moveable adjusting device connected with the lower deviation rectification roll. In the radial projection of the deviation rectification roll, the transition region is of a straight line or an arc shape. The moveable adjusting device is a manual type, electrodynamic type, pneumatic type or hydraulic type moveable adjusting device. The deviation rectification roll is provided with a rotation driving device. The rotation driving device adopts the motor-driven mode. The rectifying device for strip steel twisting and deviating in the utility model is suitable for all strip steel continuous sets, such as a galvanizing set, an electrogalvanizing set, an annealing set, a color coated set, a zinc plating set, etc.