The invention discloses an automatic cleaning sterilizer and a working method thereof. The automatic cleaning sterilizer comprises a door lock device, a cleaning
machine outer box,
machine doors, a chemical box door, a cleaning frame, a cleaning bin, a filter, a fan, a heating chamber, a frame, a side
pipe, air springs, a door shaft, a liquid adding device, a limiting plate, an exhaust port, a finheating
pipe, a
silicone hose, a one-way valve, a top water spraying
pipe, a
bottom water spraying pipe, a
circulating pump, a drainage pump, a drainage pipe, a
water heating pipe, a water adding pipe, a
disinfectant adding opening, an oil adding opening, an
enzyme adding opening and a spraying arm. The door lock structure of the automatic cleaning sterilizer is simple, the requirement for normalworking of the door lock structure under the high temperature condition is met,
machining and assembling are facilitated, disassembling is further convenient, and later repairing and maintenance arefacilitated. By controlling pump bodies, the outstanding problem that the chemical adding dosage is instable in a current market is solved, meanwhile, the working efficiency is improved, the quicker and more convenient effects are achieved, the safety of workers is protected, the automatic cleaning sterilizer further has the characteristics of multiple cleaning and multiple rinsing, thus the cleaning effect is significantly improved, and secondary
pollution is avoided.