In this study, we developed the innovation of Zn-doped Chitosan aerogel using Chitosan as template and ZnCl2 as precursor, which employed the properties of three-dimensional porous structure. By adopting field-emmision scanning electron microscope (FESEM) and N2 adsorption/desorption, we learn that the Zn-doped Chitosan aerogels have three-dimensional porous structures featuring high surface area. When the mass ratio of Chitosan to ZnCl2 is 1:1, the measurements show that the aerogel has high BET surface area of 460 m²/g, average pore diameter about 3~10nm, which means the aerogel possesses the typical characteristic of porous.