An integrated plug-in box structure, comprising a plug-in box body structure formed by two side plates 3, two plug-in slot plates 1 and a rear cover plate 2 at the rear side, the plug-in slot plate 1 comprising a cover plate 11, the top of the cover plate 11 being upwardly protruded to form a support step 12, the top of the support step 12 being formed with a plug-in slot structure 13 for mounting plug-ins, the cover plate 11, the support step 12 and the plug-in slot structure 13 being integrally processed and formed, the bottom of the cover plate 11 being provided with a heat dissipation cavity 14 communicating with the plug-in slot structure 13, a heat dissipation module 15 being arranged in the heat dissipation cavity 14, the heat dissipation module 15 being detachably fixed on the cover plate 11, and compared with the prior art, the top plate and the bottom plate are integrated into a whole part, the types of parts are reduced, the integration degree is improved, the heat dissipation module is integrated, and a fan module does not need to be designed separately for the plug-in box.