The invention discloses an automatic overturning retort unloading device. The automatic overturning retort unloading device comprises a supporting frame; a beam which is driven to lift through a lifting power mechanism and is transversely arranged above a retort bucket and a feeding hopper is arranged on the supporting frame; the cross beam is connected with a walking frame which is driven to slide along the beam through a power walking mechanism; the walking frame is provided with two hanging arms which are arranged longitudinally and are arranged oppositely; drive shafts which are arranged horizontally and oppositely and can rotate and slide are correspondingly connected with the lower parts of the two hanging arms; a driving head which can be connected with a supporting column on the retort bucket is arranged at the inwards extending end of each drive shaft, wherein a retort overturning power device which drives the corresponding drive shaft to rotate is arranged on one hanging arm; a sliding driving device which drives each drive shaft to slide horizontally is arranged at the lower part of the corresponding hanging arm. The automatic overturning retort unloading device has the advantages that retorts can be overturned and unloaded automatically, and the retorts are unloaded thoroughly.