The extruded aquatic fish feed production line is a kind of equipment specially used to produce various types of aquatic fish feed and realize extruding. The production line can be widely used in the fields of freshwater fish, sea fish and shrimp breeding, as well as the production of various aquatic feeds such as floating fish feed, slowly sinking fish feed, and sinking fish feed. The extruded aquatic fish feed production line usually consists of an overall production line including crushing System, mixing system, puffing granulation, drying system, spraying system, cooling system, packaging system and other equipment. The selection of equipment varies according to different needs and requirements. First, the mixer is used to mix various raw materials. It can roughly mix and balance the oil of various materials such as cereals, beans, oil plants, fish meal, and meat and bone meal, so as to ensure that the ingredients in the feed The balance of nutrients. Then it is sent to the pulverizer for grinding, the raw materials are stirred evenly into fine powder by the mixing system, and then the conveying equipment directly loosens the soil and the double-screw conveyor enters the preheater for preheating treatment; then, the particles pass through the extruder for high-temperature rapid expansion. The extruder adopts high temperature and high pressure to expand, and under the action of thermal energy and mechanical energy, the particles are expanded by 3-5 times. Subsequently, a dryer dries the extruded feed to remove excess moisture and increase feed stability. Finally, it is refueled by an oil spray device, and then packed by a packaging machine. The extruded aquatic fish feed production line has the advantages of large output, simple process, easy operation, and energy saving. At the same time, the extruded feed tastes good and is easy to digest and absorb, which is conducive to the healthy development of aquaculture.