The invention provides a customized hardcover space indoor sound-absorbing inorganic keel combined-type partition wall structure which comprises a keel base frame. Two face plate components are laid on the two opposite faces of the keel base frame; the face plate components comprise first face plates which are mounted on the keel base frame; each first face plate comprises two first face plate units which are oppositely arranged, wherein the two first face plate units are engaged through a tooth-shaped face; second face plates are mounted on the first face plates and each internally provided with a plurality of first ribs; and one ends of the first ribs penetrate through the first face plates to be connected with the keel base frame. According to the customized hardcover space indoor sound-absorbing inorganic keel combined-type partition wall structure, the problem that in the prior art, a partition wall is poor in strength and noise-reduction effect can be effectively solved.