The expanded pet feed production line is an industrial automatic production line that uses various cereals or animal products as the main raw materials to produce expanded feed. The production line adopts twin-screw extrusion and expansion production process, which uses high temperature, high pressure and shear force during the extrusion process to ripen and denature the starch and animal and vegetable protein in the raw materials, and then extrude them through the mold. The extrusion shape can be adjusted by changing the mold; The extruded products are then screened, dried, sprayed and cooled to finally produce extruded pet feed. Compared with non expanded feed, this kind of product has the advantages of easy chewing, easy digestion, high nutrient absorption rate and light weight; It is often used in the production of aquatic floating, suspended feed, staple food for cats and dogs, and some high-end poultry and livestock feed. The production process of this production line is completed at one time from feeding to finished products, with high degree of automation, tight connection between equipment, no redundant configuration, and the main material is food grade stainless steel; The production line has a high degree of automation, stable product quality, continuous production (no less than 72 hours of continuous production), no waste, and low energy consumption; Support customized design and manufacturing, and fully cooperate with the production needs of customers.