The KLF series laboratory magnetic stirring reaction kettle is composed of a kettle body, kettle cover, magnetic stirrer, heater, valve, feeding port, internal cooling coil, safety blasting device, pressure gauge, controller, and lifting device, which cannot be automatically or manually lifted. The stainless steel high-pressure reactor system is a stirring reaction device for chemical reactions of gas-liquid, liquid-liquid, liquid-solid or gas-liquid solid three-phase chemical materials. It can fully stir various chemical materials under high temperature, high pressure, and vacuum conditions to enhance mass and heat transfer processes. Suitable for stirring reactions in various flammable, explosive, highly toxic, valuable media and other highly permeable chemical media, it is an ideal leak free reaction equipment for sulfurization, fluorination, hydrogenation and other reactions in petroleum, chemical, organic synthesis, polymer material polymerization, food and other processes.