Abstract:With rich nutrients and low fat，aquatic products are popular.Nevertheless，due to microbial invasion，the deterioration of aquatic products expedites during storage，which explains why it is difficult to store and transport such products.Only one preservation technique fails to inhibit all microorganisms，and thus the combination of multiple techniques seems to be an ideal solution to prolonging the shelf life of aquatic products.Amid the higher requirement of food safety and quality，natural biopreservative has been widely recognized by scientists in food preservation.Chitosan has been extensively used for food protection owing to the excellent antimicrobial activity，film-forming property，and safety.Based on the deterioration principle of aquatic products，this paper reviewed the antimicrobial effects and mechanisms of chitosan and the application of it with other preservation techniques in aquatic products，which is expected to provide a reference for further research and application of chitosan in preservation of aquatic products.