The invention discloses a disposable absorbing article, which comprises an absorbing main body and an outer enveloping material, wherein the absorbing main body comprises a liquid-permeable surface layer, a liquid-tight bottom layer and an absorbing layer between the liquid-permeable surface layer and the liquid-tight bottom layer, as well as protective wings which extend outwards from two sides of the disposable absorbing article, wherein a back gum layer is arranged on one side, close to clothing, of the liquid-tight bottom layer material of the absorbing main body, and the outer enveloping material, which is used for protecting the back gum layer temporarily, is arranged on one side, close to the clothing, of the back gum layer; the disposable absorbing article is characterized in that the liquid-permeable surface layer is a composite surface layer which is formed by splicing at least two sheets of materials in a longitudinal direction; and adjacent materials in the composite surface layer are partially overlapped in the longitudinal direction and are bonded in the overlapped region, so that the stepped composite surface layer is formed. The disposable absorbing article provided by the invention, by virtue of the stepped composite surface layer, is capable of rapidly transferring excrement of a wearer to a liquid transmission layer of the absorbing layer below; and since liquid is absorbed by the absorbing article, a back-infiltration amount is reduced and an integral diffusion effect is enhanced.