Abstract:The pigment and the chitosan were extracted from different states of shrimp shells as raw materials， which is respectively A： fresh shrimp shells； B： old shrimp shells； C： the hybrid of fresh and old shrimp shells； D： braised shrimp shells， by the way of enzymatic hydrolysis and acid-base methods. The compared research was analyzed from the color， state and extraction rate of the pigment， as well as the extraction rate and analysis of biochemistry and the solubility in acetic acid of the chitosan. The results of research indicated that the pigment from the fresh shrimp shells as raw materials could get the highest extraction rate， as well as the best color and state. At the same time， the chitosan could get the lowest viscosity， the best solubility and transparency. However， the chitosan from the old shrimp shells could get the highest viscosity， but the worst solubility and transparency.