The utility model discloses a coiled material clamping device for CT unit, including the reducing gear box, coaxial rotatory interior plate and the rotatory outer panel of being equipped with in proper order on the output shaft of reducing gear box, the output shaft free end end connection of reducing gear box has the clutch, be equipped with guider and compression hydraulic cylinder on the clutchrespectively, guider and compression hydraulic cylinder still are connected with rotatory outer panel simultaneously, the one end of clutch swing arm, the other end of swing arm is connected with theone end of tie -beam through the round pin axle, but and swing arm rotate around the pin roll, the other end of tie -beam is fixed on the mount pad of reducing gear box, install the rotary actuator on the tie -beam, the tailpiece of the piston rod head of rotary actuator is articulated with the one end of the nearly tie -beam of pendulum arm rest. Current unit equipment adjustment has been solvedto this device all must be the problem of carrying out, adjusting loaded down with trivial details, inefficiency under the decoiler block state, influence the normal production of unit.