The invention relates to a mold storage system. The mold storage system comprises a control device, a conveying device, a mold library, an in-place sensor and a pushing mechanism; the conveying deviceis electrically connected with the control device, and is used for conveying molds; the mold library is arranged on one side of the conveying device, and is electrically connected with the control device; the in-place sensor is arranged on the other side of the conveying device, is arranged opposite to the mold library, and is electrically connected with the control device; and the pushing mechanism are electrically connected with the control device, and is used for pushing the molds moving to preset positions into the mold library. According to the technical scheme, the mold storage system has the advantages that automatic conveying storage of the molds can be realized, moreover, sequential and ordered storage of the molds is formed, then manual participation is reduced or not needed, reduction of cost is facilitated, moreover, debugging optimization is carried out on all the mechanical function modules so that the mold storage system can well adapt to the production rhythm, and theproduction efficiency is ensured.