The invention discloses an automatic walking mechanism of a three-dimensional curing kiln. The automatic walking mechanism comprises a curing car, a lifting ferry car, a curing car push-pull mechanism, a push travel switch, a pull travel switch and a control device, wherein the pull travel switch and the push travel switch are arranged in a kiln hole of a curing kiln chamber; the lifting ferry car is used for conveying the curing car to the kiln hole of the curing kiln chamber or a next production line; when the pull travel switch or the push travel switch detects the curing car, a pull or push signal is sent to the control device; and the control device controls the curing car push-pull mechanism to pull or push the curing car in or outside the curing kiln chamber. The automatic walking mechanism of the three-dimensional curing kiln enables the operation of pulling or pushing the curing car in or outside the curing kiln chamber to be automatically finished, enables production actions to be automated through an intelligent control device without manual intervention, improves the production linkage, can efficiently and safely finish the curing work, improves the working efficiency, and is high in reliability.