Manufacturing method of special-shaped hole of circuit board

The invention discloses a method for manufacturing a special-shaped hole of a circuit board, which is applied to manufacturing special-shaped holes among slotted holes, and is characterized in that different drilling belt data are set according to the position relationship of the slotted holes, so that the size and the shape after drilling meet the requirements of a user, and subsequent part installation is facilitated. The problem of drill bit interruption in the drilling process can be reduced after drill band data are standardized, and the manufacturing cost is saved; drilling data does not need to be modified in the drilling process, so that the problem of modifying the drilling data by repeated shutdown in the drilling process can be reduced, the productivity is improved, and water, electricity and gas resources are saved; poor quality hidden dangers such as poor electroless plating copper backlight, poor hole wall binding force, no copper in the hole, hole wall copper separation, hole blowing, hole expl