The invention provides a secondary screen cabinet punching device. The secondary screen cabinet punching device comprises a horizontal moving body, a placing seat and a vertical moving body; and the horizontal moving body comprises a first horizontal cross beam, a second horizontal cross beam, a first horizontal optical axis, a second horizontal optical axis, a horizontal lead screw, a horizontalmoving plate, a first horizontal moving sliding strip, a second horizontal moving sliding strip and a horizontal moving screw strip. According to the secondary screen cabinet punching device, the horizontal lead screw, a vertical lead screw and other components of the secondary screen cabinet opening device have certain straightness, a polishing machine moves along the direction of the vertical lead screw and the horizontal lead screw in the moving process, so that the size is ensured to meet the design requirements, the movement speed can be controlled, the movement stability can be guaranteed, the edge is smooth without burrs, and tooth-shaped structure is avoided; The hole punching position meets the design requirements and are also convenient to check; after cutting, paint layers and protective layers around the holes are intact; the punched holes are attractive, edge lines of the punched holes are flat and vertical and are parallel to the outer contour of a screen cabinet; and thepotential safety hazards caused by oxygen acetylene cutting are avoided.