An electric nail gun structure is disclosed. A gun head seat body is formed into a structure with inner and outer cover layers, allowing a rotating rod and a slide piece moving a pull nail linearly to be configured inside it; the gun head seat body is formed completely by having a steel sleeve with equidistantly spaced slide chutes on the inside thereof covered with a plastic contact layer, where the slide chutes allows projecting ribs configured on the steel slide piece to be in engagement therewith so that a stable and safe nail pull operation can be obtained. Furthermore, a length extensible and width adjustable auxiliary handle rod is configured on the outside of the gun head seat body allowing nail gun seat bodies for all kinds of electric, pneumatic drills to be operated conveniently and safely with one single hand.