Flake ice is widely used in a variety of sea food processing fields as it can provide sufficient water, and cool down the temperature in the process of melting. At whatever stage in the development history, mechanical refrigeration systems offer only cold temperature intead of moit surroundings,which is normally causing dry surface and dehydration of seafood, and reducing the freshness of sea food.While flake ice is able to provide a perfectcooling surrounding, which keeps the sea food in an ideal cold and moist status.Flake ice can prevent seafood from turning rotten and degenerate,furthermore, it may avoid cases of dewatering and dry surface.The melting ice water washes the surface of sea food, which helps reduce the content of fungi and suppress outdoor and reaches the ideal fresh keeping effect.