Abstract:The experiment was conducted to determine the changes of total volatile basic nitrogen （TVB-N），total bacterial colonies，pH value，water holding capacity and sensory evaluation during 5 days of cold storage at 4℃.using 0.20%caffeic acid，2%chitosan，0.20%caffeic acid and 1.8%chitosan，2%chitosan-caffeic acid derivatives and sterile water as test materials，exploratory discussion of chitosan and caffeic acid derivatives composite film on preservation effect of turbot.The results showed that compared with the samples treated with sterile water，the four treatments could delay the increase of volatile basic nitrogen，total bacterial colonies and pH value，and reduce the decrease of water holding capacity.Compared with the four different treatments，2%chitosan-caffeic acid derivative coating had the best effect on the preservation of turbot.