Disclosed is a packing device for CRT funnels vertically stacked over and over, receiving a plurality of CRT funnels, comprising a planar supporter having a plurality of through holes, each through hole allowing a neck of the funnel to be inserted therethrough; a pair of first inner walls formed in opposite sides of the supporter, being able to be folded relative to the planar surface of the supporter; and a pair of second inner walls formed in opposite sides of the supporter, being able to be folded relative to the planar surface of the supporter together with the first inner walls, a plurality of foldable lines being formed in at least one of the first and second inner walls, allowing the first and second inner walls to be folded relative to the planar surface of the supporter. With this configuration, there is provided a packing device for CRT funnels having a stiffness enough to support the CRT funnels while the funnels are being transferred, and being stored with reduced volume.