The invention belongs to the technical field of production and processing of dewaxing fluids, and particularly relates to a processing device for a dewaxing liquid. The processing device comprises a tank body, wherein the tank body is provided with a feed port and a discharge port, the discharge port is provided with an electromagnetic valve, the tank body is provided with a control panel, the electromagnetic valve is electrically connected with the control panel, the tank body is provided with a motor, the motor is provided with a rotating shaft, the tank body is provided with a liquid storage tank, the liquid storage tank is provided with a cleaning mechanism and a mounting seat, the rotating shaft is provided with a driving gear, the driving gear is provided with a driven gear, the liquid storage tank is provided with a sleeve, the sleeve is provided with a first gear ring, the mounting seat is provided with a groove, the groove is provided with a rotating rod, the rotating rod is provided with a stirring shaft, the stirring shaft is provided with a pressing block, the sleeve is provided with a pressing wheel, the stirring shaft is provided with a balancing weight and an auxiliary stirring mechanism, and the rotating shaft is provided with stirring blades. According to the invention, raw materials of the dewaxing fluid can be fully stirred, and a mixing effect is excellent, so the production efficiency of products is improved; and meanwhile, the cleaning mechanism is arranged to clean the interior of the tank body, manpower investment is reduced, and practicability is high.