The invention discloses a cut tooth installation positioner and a using method thereof, and belongs to the technical field of cut tooth installation positioning on coal mine tunneling mining equipment. The cut tooth installation positioner comprises a rotating table and a positioning rack. The rotating table comprises a base plate, a pedestal and an angle scale. A stepped groove is formed in the side, close to the inner circle, of the upper surface of the angle scale. The bottom of a cutting head is arranged in the stepped groove. The side, close to the outer circle, of the upper surface of the base plate is connected with the lower surface of a rotating table base. Circumferential grooves are formed in the upper surface of the rotating table base, and balls are arranged in the circumferential grooves. The upper portion of the rotating table base is connected with a T-shaped groove formed by the rotating table, an inner chuck and an outer chuck in a clamping mode. The positioning rackcomprises a tray, a supporting frame and a dividing rule. The cut tooth installation positioner is simple in structure and convenient and fast to operate. Cut teeth can be rapidly and accurately installed in a high-precision mode, a traditional cut tooth installation method is improved, and a certain theoretical foundation is provided for the subsequent intelligent cut tooth installation.