The invention provides a making method for a pure-cotton three-dimensional shell fabric with an embossment effect. The pure-cotton three-dimensional shell fabric is characterized by comprising a basic shell fabric layer, wherein the basic shell fabric layer is formed by interweaving warps and wefts; the weave structure is jacquard dual-layer weave; one layer of weave is formed by interweaving warps CJ7.3tex*2 and wefts CJ18.2tex*2; the other layer of weave is formed by interweaving warps CJ7.3tex*2 and wefts CJ14.5tex; an adsorption layer is arranged below the basic shell fabric layer; an embossment decoration layer is arranged above the basic shell fabric layer; a cavity is formed inside the embossment decoration layer; soft support tubes which are different in heights are arranged in the cavity, so that a three-dimensional concave-convex surface is formed on the embossment decoration layer; the surface of the embossment decoration layer is provided with a crystal stone transparent clad layer. The pure-cotton three-dimensional shell fabric has the beneficial effects of high air permeability, high elasticity, especially good decorative embossment effect, natural and smooth fluctuation on the surface, novel and unique design, and good market prospect.