The invention discloses a drill bit connector of electromagnetic valve cover machining equipment. The drill bit connector of the electromagnetic valve cover machining equipment comprises an upper body and a lower body; the upper body is cylindrical; the lower body is a cone downwards inclined and with an inner cavity surface; the upper body and the lower body are provided with concentric drill bit mounting holes; three fan-shaped connecting blocks arrayed about the circle center are arranged on the lower end surface of the upper body; fan-shaped plates are mounted on the lower end surfaces of the three fan-shaped connecting blocks; inclined edges of the three fan-shaped plates are larger than inclined edges of the three fan-shaped connecting blocks; the side surfaces of two adjacent fan-shaped plates and the lower end surface of the upper body form drill bit clamping block chutes; and drill bit clamping blocks capable of sliding are respectively mounted in the three drill bit clamping block chutes. Through the mode, the drill bit connector of the electromagnetic valve cover machining equipment is convenient for replacing drill bits, and is simple and novel in structure and long in service life.