The invention discloses a metal sheet pulse current auxiliary micro punching device and method, and relates to a micro punching device and method so as to solve the problems an existing micro punchingtechnology is great in shaping force, a mould service life is short and hole edge defects are multiple. The metal sheet pulse current auxiliary micro punching device comprises a mould assembly and apulse power source system; the mould assembly comprises a die shank, an upper die plate, an upper insulating plate, an upper backing plate, a punch head fixing plate, a punch head, a supporting plate,a heat insulating plate, a female die, a female die fixing plate, a lower insulating plate and a lower die plate which are arranged from top to bottom sequentially; and the female die is arranged inthe female die fixing plate. The metal sheet pulse current auxiliary micro punching method comprises the steps that one, installation and debugging are carried out; two, technological parameters are selected; three blank loading is carried out; four, blank micro punching forming is carried out; and five, micropore piece demoulding is carried out. The metal sheet pulse current auxiliary micro punching device and the metal sheet pulse current auxiliary micro punching method are suitable for micro punching forming on materials, like a titanium alloy, a nickel base alloy and high-strength steel, which are difficult to form or can not be formed by a conventional micro punching method.