The invention relates to a hydrolysis device for preparing p-toluenesulfonyl chloride, which comprises a reaction kettle, and further comprises a cleaning mechanism, a uniform dripping mechanism, a stirring mechanism and a gasoline transmission mechanism. The invention further provides a p-toluenesulfonyl chloride processing technology, which comprises the steps of step 1, producing p-toluenesulfonyl chloride; step 2, conducting a hydrolysis reaction; step 3, adjusting the reaction temperature; step 4, conducting a dissolution reaction; step 5, carrying out self-cleaning; and step 6, standingfor separation. The technical problems that when solvent gasoline is added for dissolution, stirring needs to be conducted, then a stirring piece is not beneficial to sufficient layering and later separation of a mixture, in addition, the mixture left on the stirring piece cannot be cleaned and discharged in time, and the accuracy of the next hydrolysis reaction is influenced while the accuracy ofthe hydrolysis reaction at this time is reduced are solved.