Postoperative adhesion is one of the key problems which have an influence on the surgical effect. To solve this problem

many anti-adhesion materials have been developed. Chitosan has non-toxic

no stimulation

no immunogenicity

no heat

no hemolysis

no mutagenic response as well as many other excellent properties. For these reasons

chitosan has been widely used in a variety of biological materials

including anti-adhesion materials. In this paper

the progress and problems of chitosan-based anti-adhesion materials were discussed

which may contribute us to effectively design and develop new types of chitosan-based anti-adhesion materials.