The utility model discloses and belongs to the technical field of corrosion inhibitor production. The utility model relates to a reaction kettle, in particular to an enamel reaction kettle for efficiently producing scale and corrosion inhibitors. The reaction kettle comprises a reaction kettle body, a motor, a heating block, a waste gas exhaust device and supporting foot stands, wherein a kettle cover is fixedly mounted at the top of the reaction kettle body; a feeding hole is fixedly formed in the left side of the top of the kettle cover; a discharge hole is fixedly formed in the middle of the bottom of the reaction kettle body; a valve is fixedly mounted on the discharge hole; a motor is fixedly mounted in the middle of the top of the kettle cover; the output end of the motor penetratesthrough the kettle cover and is fixedly provided with a rotating shaft; the reaction kettle is reasonable in structure, stirring of materials is achieved through cooperation of the reaction kettle body, the kettle cover, the motor, the rotating shaft and the stirring fan blades, and effective purification treatment of waste gas generated in the production process is achieved through cooperation ofthe air pump, the waste purifier, the waste gas dryer and the exhaust port.