The invention discloses production line machining equipment for packing boxes. The production line machining equipment comprises a rack, a conveying mechanism fixed on the rack and a film-covering mechanism, a drying mechanism, a stamping and cutting mechanism and an edge-folding mechanism which are sequentially fixed on the rack along the conveying direction of the conveying mechanism; the upper part of the conveying mechanism is provided with a conveying surface; the conveying surface is horizontally arranged; and the film-covering mechanism and the drying mechanism are located above the conveying surface. The production line machining equipment is compact and reasonable in structure; the working procedures of film-covering, drying, cutting and edge-folding for machining of the packing boxes can be sequentially and automatically finished on the same equipment; time is saved; the machining efficiency is improved; labor investment is reduced; each component in the film-covering mechanism is cooperative with the conveying mechanism, so that compact film-covering can be finished in the conveying process; one-step cutting and forming can be realized through the combination of tools, and the efficiency is high; and a support part, a material unloading part and the edge-folding mechanism cooperate with one another, so that while the unloading of box boards in the stamping and cutting mechanism is realized, loading on the edge-folding mechanism is realized, and the utilization rate of the mechanisms is improved.