The invention discloses an automatic egg tray cleaning machine. The equipment comprises a stacking and collecting device, a cleaning area, a stacking and spin-drying device, a discharge conveyor and aconveying chain, wherein the stacking and collecting device is used for sorting, conveying and positioning the egg trays with dirt, the cleaning area is used for cleaning and disinfecting the egg trays of the dirt, the stacking and spin-drying device is used for carrying out spin-drying operation on the egg trays after cleaning operation is performed on the egg trays, the discharge conveyor is used for conveying the spin-dried egg trays, and the conveying chain is used for conveying the egg trays. The automatic egg tray cleaning machine can achieve automatic cleaning work of the egg trays, the egg trays of the automatic egg tray cleaning machine subjected to the sorting operation of the stacking and collecting device under the conveying action of the conveying chain, are conveyed to the cleaning area for cleaning and disinfecting, after the egg trays are cleaned and disinfected, the egg trays are conveyed to the stacking and spin-drying device for automatic spin-drying operation, andthe egg trays are automatically conveyed to the next station after being subjected to the spin-drying operation.