Abstract:With the rapid development of aquatic product processing industry in our country，a large quantity of non-edible by-products are wasted each year.Preparation of gelatin from these aquatic processing by-products could generate good economic and social benefits.According to current correlative research from home and abroad，the extraction progress，gel characteristics，modification，application and development of aquatic protein-derived gelatins were reviewed in order to provide references for the high-value utilization of aquatic by-products and the searching for better alternatives to mammalian gelatins.