The utility model provides a cutting clamp tool used for an inclined end face inner ring arc section and relates to a cutting clamp tool. The cutting clamp tool used for the inclined end face inner ring arc section solves the problem that an existing cutting clamp tool is low in processing accuracy. The cutting clamp tool used for the inclined end face inner ring arc section comprises a bottom plate (1), an inclination block (2), a base seat (3), a turntable (4) and a plurality of pressing plates (6). An inclined face of the inclination block (2) inclines to a left side by 46 degrees, and the inclination block (2) is arranged on the bottom plate (1) fixedly connected with the bottom plate (1). The base seat (3) is fixedly arranged on the inclination block (2). An inclined end face inner ring arc section waiting to be cut is arranged on the turntable (4), and the turntable (4) is fixedly arranged on the base seat (3) through the pressing plates (6). The cutting clamp tool used for the inclined end face inner ring arc section is suitable for cutting of the inclined end face inner ring arc section.