Abstract:  Along with the flourishing study on the animal medicinal materials, it was proved that some endogenouspolysaccharides of animal organism had all kinds of bioactivities. The existence and distributing status of animal polysaccharidewere presented. The category and characteristics of animal polysaccharides were briefly reviewed. The methods of extracting,separating and determining the polysaccharide and its bioactivity and application were summarized especially.

Key words: animal polysaccharide, distributing, category, extract, bioactivity, application