Abstract: A central retaining structure for a CD box includes a base located at the center of the CD box, and having a hexagonal bearing platform protruding from the center of the base; two spaced squeezing blocks integrally formed with the hexagonal bearing platform, wherein the two spaced squeezing blocks are separated by a slit, whereby a distance thereacross is drawn closer to each other; a lip formed on an outer periphery near an upper edge of the squeezing blocks; and resilient supporting pieces extending upwardly from bottom of the squeezing blocks and formed in a resilient shape for dispersing counterforce created by the lips, wherein the each of the resilient supporting pieces comprises contact protrusions arranged a distance from the lips.