The utility model provides a novel improve radial drill of structure, including stand, rocking arm, lead screw, unit head, auxiliary strut, the fixed plate, the circular orbit body removes the wheel, the protection casing, the workstation, the base, the cooling tube, shaft and guide rail, the stand fix the upper portion at the base, the rocking arm install between stand and auxiliary strut, the lead screw setting on the right side of stand, the unit head install on rocking arm upper portion, the fixed plate fix the lower part at auxiliary strut, the circular orbit body install around the base, the utility model discloses an auxiliary strut, the fixed plate, protection casing and the circular orbit body be provided with the expansion equipment that the does benefit to range of work, improve work efficiency, the guarantee work safety is just with marketing and application.