The utility model provides a prestress carbon fiber reinforced polymer cloth reinforcing concrete column tensioning device. The prestress carbon fiber reinforced polymer cloth reinforcing concrete column tensioning device comprises anchor plates, special-shaped base plates, base plates and long screws, wherein the anchor plates are rectangular, fixing through holes are formed in the four corners of each anchor plate, supporting plates are symmetrically arranged on the front side of the middle of each anchor plate, long screw through holes are formed in the supporting plates, the number of the anchor plates is four, the special-shaped base plates are both in an L shape, the length of each special-shaped base plate is larger than the width of carbon fiber reinforced polymer cloth, through holes connected with the base plates and through holes through which the long screws penetrate are formed in the short edge of each L shape and the long edge of each L shape respectively, the base plates are both in a long strip shape, the number of the special-shaped base plates is two, the length of each base plate is larger than the width of the carbon fiber reinforced polymer cloth, screw holes used for being connected with the special-shaped base plates are formed in the two ends of each base plate, the number of the base plates is two, and the number of the long screws is two. The prestress carbon fiber reinforced polymer cloth reinforcing concrete column tensioning device has the advantages that the structure is simple, construction is convenient, tensile force can be controlled easily, a tensioning structure can be used repeatedly, construction cost is reduced, construction period is shortened, and remarkable technical and economical benefits are achieved.