The invention discloses an electric discharge machining-oriented actuator and a hole forming method. The electric discharge machining-oriented actuator includes a machine frame and a transmission part. The machine frame includes a base and a plurality of guide rail brackets. The cross section of the base and the cross section of a to-be-machined workpiece are the same in shape. The base is used for supporting all the guide rail brackets and supporting the transmission part through the guide rail brackets. The transmission part includes a pedestal and a power source for driving the pedestal tomove up and down. The outer side of the base is hinged to the upper ends of a plurality of connecting rods, the lower ends of the connecting rods are hinged to one side of a sliding block, and the other end of the sliding block is connected with an electric spark tool. The sliding block drives the electric spark tool to move along the upper surfaces of the guide rail brackets. Circumferential holesites of a plurality of workpieces can be machined in one time by forming holes through the electric discharge machining-oriented actuator, and electric spark forming machining efficiency is improvedby times.