The invention discloses a seafood sausage of seafood and a preparation method thereof, which is characterized in that it contains the following raw materials, which are processed, twisted, crushed, filled, sterilized, soaked and packaged according to the following weight ratios simultaneously. Preparation: seafood 40-85, edible water 10-30, edible vegetable oil 1-12, chicken protein powder 2-6, salt 0.5-1.6, collagen 0.3-1.2, monosodium glutamate 0.1-0.5, carrageenan 0.1-0.8, diacetic acid Sodium 0.02-0.10, nisin 0.01-0.05, the present invention is made of seafood as the main raw material, which is rich in nutrition, balanced, rich in seafood flavor, unique in flavor, increases appetite, stable in quality, has no harm to health, and satisfies Consumer demand for seafood. At the same time, the product is vacuum-packed, which not only has a unique appearance and is ready to eat after opening the bag, but also plays an important role in anti-oxidation and prolonging the shelf life.