Abstract: Fish gelatin,derived from by- products of the fish- processing industry,not only can meets someone's special requirements,but it possesses unique properties distinguishing from traditional mammalian gelatin.However,functional characteristics of fish gelatin,such as gel strength,film property,emulsifying property and foam ability,are lower than traditional gelatin,which have restrictions on its application.It was discussed the latest literatures about the strategies used to improve fish gelatin properties,as well as its future potentials.