The invention relates to the technical field of printing and packaging, in particular to a corrugated carton production process and an automatic production line thereof. The corrugated carton production process includes the steps of paper splitting and line pressing, picture and text printing, mold pressing, connecting, bundling and stacking. The automatic production line comprises a paper splitting and line pressing machine, a slotting printing machine, a molding press, a waste paper removing device, a carton bonding machine, a packaging machine and a stacking machine, wherein the paper splitting and line pressing machine, the slotting printing machine, the molding press, the waste paper removing device, the carton bonding machine, the packaging machine and the stacking machine are sequentially connected through a conveying mechanism. The slotting printing machine is provided with an ultraviolet drying device, and a controller of the automatic production line is used for controlling communication and speed synchronization among all the single devices. According to the corrugated carton production process and the automatic production line thereof, the structure is reasonable, automatic production is achieved, production efficiency for existing corrugated cartons is improved, and the production cost is lowered.