The invention relates to a grounding copper bar common punching jump forming tool and a method thereof. The grounding copper bar common punching jump forming tool and the method thereof are characterized in that the grounding copper bar common punching jump forming tool comprises a punching platform, a punch, positioning templates and a fixing clamp; due to the four processes of end portion punching, two side hole punching, positioning template distance adjusting and middle hole punching, punching is conducted from the two ends of a grounding copper bar to the middle of the grounding copper bar, accumulation of punching errors is avoided, hole site positioning errors are reduced, and the qualification rate of the grounding copper bar is increased; according to the pair of positioning templates, punching is conducted two times at the position of the positioning template a so that punching at the end portion can be completed, and punching is conducted two times at the position of the positioning template b so that side hole punching can be completed; and the punching positioning precision is also ensured while the punching efficiency is improved.