The standard laboratory pressure vessel for producing berberine has a working pressure of 9.8Mpa, an adjustable stirring speed of 20-750r/min, a working temperature of 300 ℃, a main contact material material of 1Cr18Ni9Ti stainless steel, a propeller blade, and a regular DC motor; Conventional kettle lid openings: gas phase ports are equipped with needle valves (for inlet, exhaust, and vacuum extraction), liquid phase ports are equipped with needle valves and bottom pipes inserted into the kettle (for sampling or feeding during the reaction process), feeding ports are equipped with screw plugs, temperature measurement and control ports are equipped with protective tubes and platinum resistors, pressure gauges are equipped with safety blasting ports and pressure gauges and safety explosion-proof devices, and cooling coils in the kettle are equipped with inlet and outlet water nozzles; If the user has special requirements for the main materials of the reaction vessel (1Cr18Ni9Ti (321), 00Cr17Ni14MO2 (316L), 0Cr18Ni9 (304), Ni nickel, titanium and titanium alloys, tantalum, zirconium, Hastelloy alloy, PTFE lining, etc.), the opening of the vessel cover, internal structure, pressure, heating method, stirring blades, and the addition of other auxiliary devices (such as condensation reflux device, constant pressure feeding tank, receiving device, condenser, etc.), they can be processed and manufactured according to the user's requirements.