Provided is a special discharging gap apparatus, comprising a main body section which is composed of a porcelain vase, a base plate, an iron core and two side plates sleeved with two coils upon the base plate, an insulated panel with a lower electrode, and an upper flange cover fixed upon the two side plates, an upper electrode assembling body composed of an insulating flange and an upper electrode having an electrode sleeve and fixed in the insulating flange, with the upper electrode assembling body arranged upon the main body section, an insulating member assembling body, and the like. The special discharging gap apparatus, with compact structure, security, reliability, and easy installation, is applicable to the grounding discharge protective apparatus matching in the power system.