Drilling method for super-long circuit board

The invention discloses a drilling method for a super-long circuit board. The drilling method comprises the following steps: dividing a circuit board into a first drilling belt zone and a second drilling belt zone; arranging a target I, a target II and a target III on the first drilling belt zone; arranging a target A, a target B, a target C and a target D close to the boundary line, wherein the target A and the target B are located on the same transverse straight line, the target B and the target D are located on the same longitudinal straight line and are tangent to the boundary line; and when the length of the circuit board is larger than 1000 mm, arranging a target E and a target F on the second drilling belt zone, wherein the target E is arranged in the middle of one long edge of the second drilling belt zone, and the target F is arranged at the position, away from the boundary line, of the board corner of PCB on the second drilling belt zone and away from the target E. According to the invention, the me