The invention belongs to the technical field of building products, and particularly relates to an auxiliary storing and taking system of a maintenance warehouse for a precast concrete component production line. The system comprises a push-and-pull piston cylinder, wherein the cylinder wall of the push-and-pull piston cylinder is fixedly hinged to a rack of a storing and taking machine, and a taking head is fixedly connected to the rod end of a piston rod of the push-and-pull piston cylinder; the taking head comprises a sliding rail and a sliding plate, and the sliding plate is parallel to theextraction direction of a die table relative to the walking direction of the sliding rail; the tail end of the sliding plate is fixedly connected with the rod end of the piston rod, a rotating shaft of which the axis is parallel to the extraction direction of the die table is rotatably matched with the sliding plate, and the rotating shaft is driven to rotate by a rotary motor; and a hook plate which is used for hooking the die table from the maintenance warehouse is arranged on one axial end, which is far from the push-and-pull piston cylinder relatively, of the rotating shaft, and the hook plate extends outwards in the radial direction of the rotating shaft. The auxiliary storing and taking system has the advantages of simplicity and convenience and rapidity in operation and low manufacturing cost, so that an existing driving device can be assisted to quickly store and take the die table in any layer of the maintenance warehouse at a fixed point.