This stainless steel reaction vessel is optimized for animal cell culture. The kettle body is made of 316L medical grade stainless steel, which is corrosion-resistant and biocompatible, with a capacity of 10L-5000L, meeting different production needs. The inner wall is polished with ultra precision mirror finish, with a roughness of Ra ≤ 0.4 μ m, reducing cell adhesion and damage. The temperature control module utilizes a sandwich water bath heat exchange structure and an imported platinum resistance temperature sensor, which can accurately control the temperature between 36-38 ℃ with fluctuations within ± 0.1 ℃. The stirring device adopts magnetic levitation coupling stirring technology and low shear butterfly stirring blade, with a speed of 5-100r/min infinitely adjustable to reduce shear force. The environmental parameter control system can accurately monitor and adjust pH, dissolved oxygen, and gas ratio. It also has a fully automatic in place sterilization and cleaning system to ensure a sterile environment. The intelligent control system can preset parameters, collect and analyze data, etc. The operating interface conforms to GMP human-machine engineering design, providing reliable guarantee for animal cell fermentation production and widely used in the field of biopharmaceuticals.