fish gelatin was extract from fresh fish scales and skin, molecular weight, high viscosity and high transparency,, heavy metal content is low. fish gelatin can be applied as thickening, stabilizer, blowing agent etc. used in drugs and food manufacturing as the gelatin made of bovine skin and bovine bone. same time, because of the different characteristics of fish gelatin relative to bovine skin or bovine bone gelatin, fish gelatin application was more and more research and attention, and now, fish gelatin has become the material of choice for wine fining agents and has been widely used in various types of premium wines production.