The invention discloses a special machine for machining a malleable steel cover plate pipe fitting. The special machine for machining the malleable steel cover plate pipe fitting includes a drilling final assembly, a reverse side chamfering final assembly and a tapping machine final assembly, and further includes a malleable steel cover plate pipe fitting stock bin and a malleable steel cover plate pipe fitting sliding rail, wherein the malleable steel cover plate pipe fitting sliding rail is longitudinally arranged on the top surface of a workbench and corresponds to the drilling final assembly, the reverse side chamfering final assembly and the tapping machine final assembly, a pushing device for the malleable steel cover plate pipe fitting to slide along the malleable steel cover platepipe fitting sliding rail is further included, and a malleable steel cover plate pipe fitting turnover device, there pairs of malleable steel cover plate pipe fitting fixture opening and closing devices and a malleable steel cover plate pipe fitting pushing device of a malleable steel cover plate pipe fitting turnover device station are included. Automatic feeding of malleable steel cover pipe fitting machining is realized, the quantity of malleable steel cover plate pipe fitting machining equipment and employed workers is decreased, labor intensity of malleable steel cover plate pipe fittingmachining and the production cost of malleable steel cover plate pipe fitting machining are lowered, and the machining efficiency of the malleable steel cover plate pipe fitting is improved.