The invention relates to production lines for foamed ceramics, in particular to a multi-line synchronization foamed ceramic incising and slotting processing production line. According to the multi-line synchronization foamed ceramic incising and slotting processing production line, plates are conveyed through a mechanical arm, a lifting roller table, a blank storage machine, a trimming conveyor, a splitting machine A, a peeling machine A, a crushing machine A, a waste material conveyor belt A, a turnover machine, a splitting machine B, a peeling machine B, a crushing machine B, a waste material conveyor belt B, a splitting machine C, a transition roller table A, an upper layer and lower layer separation mechanical arm, a multi-blade cutting machine A, a waste material conveyor belt C, a ferry vehicle, a slotting machine, a rotating table A, a multi-blade cutting machine B, a waste material conveyor belt D, a rotating table B and a plate discharging mechanical arm, so that the direction of the plates is changed to be matched with the process needed by the production line. Full automatic production is achieved, the production speed is improved, the production efficiency is improved, and convenience and practicability are achieved.