Dial indicator can be used to adjust skateboard to turning cone. First, the characteristics of traditional methods is introduced. Then, the step of skateboard rotation angle’s adjustment with dial indicator is analyzed. Before turning workpiece, the rotation angle of skateboard can be adjusted by the workpiece and taper plug, the rotation angle of skateboard also can be adjusted by tailstock sleeve and workpiece, and then the workpiece can be directly turned to the accuracy requirements dimensional. The rotation angle of skateboard is adjusted before processing, so it can avoid the repeated measurements and adjustment in the process, Therefore, this method can save processing time and improve the accuracy of the taper.