The invention relates to an acesulfame potassium cyclization continuous production method. The method is characterized in that the sulfonation reaction and hydrolysis reaction comprise the following steps: step a, separately pumping an intermediate generated during a synthesis reaction and sulfur trioxide into a sulfonation reactor in a certain speed, carrying out sulfonation reactions in the sulfonation reactor; step b, gasifying dichloromethane when the concentration of the reactants in the sulfonation reactor reach a certain level, spraying the sulfonation liquid into a hydrolysis reactor; step c, dropwise adding acidic water into the hydrolysis reactor to carry out hydrolysis reactions. The method has the advantages that an cyclization one-step reaction technology is adopted, thus the continuity of production operation is realized, and the work strength of workers is reduced; compared to the conventional intermittent production technology, the one-step reaction method has a higher stability, improves the service life of the reactor, shortens the reaction time, and reduces the side reactions. Furthermore, in the method, the sulfonation reaction temperature is raised, then dichloromethane gasification is utilized to reduce the reaction temperature, so that low temperature production is avoided, and a deep cooling ice machine is stopped, so the production efficient is greatly improved, and the energy consumption is largely reduced.