The invention discloses a clamping plate automatic temporary storage mechanism and a clamping plate access method, the clamping plate automatic temporary storage mechanism comprises a temporary storage rack, wherein the temporary storage rack comprises four rack frame surfaces which are in head-to-tail connection, each two rack frame surfaces which are oppositely arranged form a group of rack frames, a transmission rolling way is arranged between two rack frame surfaces of one group of the rack frame surfaces, a first cross beam is respectively transversely arranged on each rack frame surface of one group of the rack frame surfaces, a second cross beam is respectively arranged on each rack frame surface of the other group of the rack frame surfaces, a jacking-up mechanism which moves up and down is arranged below the transmission rolling way, a separation mechanism is arranged on the first cross beams, a support mechanism is arranged on the second cross beams, and a position blocking mechanism for positioning a clamping plate is arranged on the side of an outlet of the transmission rolling way. The clamping plate automatic temporary storage mechanism can be combined with a production line for use, thereby fully utilizing space on the production line, saving ground space of a plant, realizing automatic access of the clamping plate, having no need of manual intervention, greatly improving the production efficiency and saving the labor cost.