Fixing tool for processing transmission shaft earhole

The invention relates to a fixing tool for processing a transmission shaft earhole. The fixing tool comprises a base, two fixing devices and a spline shaft, wherein a limiting screw hole is formed inthe upper surface of the base; a sliding chute is formed in the two sides of the limiting screw hole; a limiting screw rod matched with the limiting screw hole in structure is fixedly arranged at thelower end of the spindle shaft; the two fixing devices are symmetrically arranged at the two ends of the base; each of the fixing devices comprises a fixing plate, a limiting block and a connecting screw rod; the fixing plate is perpendicularly and fixedly connected with the upper surface of the base; a connecting screw hole matched with the connecting screw rod in structure is formed in the center of the fixing plate; a rotating block is fixedly arranged at one end of the connecting screw rod; the other end of the connecting screw rod penetrates through the connecting screw hole and is perpendicularly and fixedly conn