The invention relates to an electromechanical product packing paper container and a packing method. A case body of a heavy paper packing case is made from a honeycomb/corrugated board double-layer binding composite. The case body comprises two case boards. Each case board is folded and molded into an L-shaped case board, and the case body is molded by bonding the overlapping parts at the joints. Corner protection baffles are arranged on the corner parts of the case body, the case body is fixed and reinforced by inserting paper corner protectors, and a pallet is a paper pallet. The packing method of the packing case comprises the steps that packing units are sequentially placed in corner protection support notches in the surface of the pallet, then the two case boards are folded into the L-shaped case boards according to indentation lines on outer corrugated boards and inserted into notches in the periphery of a top bed board of the pallet, and the corner protection support notches of the case boards are embedded into the packing units as well; and the four paper corner protectors are glued and inserted into the corner protection baffles formed at the corners of the case body, capping and bundling are conducted, and packing is completed. The packing case and the packing method have the advantages that the cost is reduced by decreasing the storage and transportation space, the assembling and casing efficiency is high, whole paper packing is achieved, and the bearing performance is good.