The invention discloses an angle impeller machining tool, and relates to the technical field of impeller machining. The angle impeller machining tool mainly aims to facilitate the machining and manufacturing of an angle impeller. According to the main technical scheme, the angle impeller machining tool comprises a plurality of bodies with the same number as clamping jaws of a chuck of a machine tool. A first working surface and a second working surface are arranged at one end of each of the bodies, and included angles are separately formed between the first working surfaces and the second working surfaces. The angle of the included angles is equal to an angular difference between 90 degrees and the angle of an angle impeller outlet mounting angle, and the second working surfaces can be deformed under the action of external force. The end surfaces of the other ends of the bodies are used for being attached to the working surfaces of the clamping jaws, the first working surfaces are usedfor being attached to the inner surface of the angle impeller, and the second working surfaces are used for being attached to the excircle contour surface of the angle impeller. The angle impeller machining tool is mainly used for the machining and manufacturing of the angle impeller.