The invention discloses a PLC-based automatic core fetching and transferring control method for a core shooting machine. The PLC-based automatic core fetching and transferring control method for the core shooting machine comprises the steps that when a hot core of the core shooting machine is manufactured, a core box of the core shooting machine is opened, and completion signals are emitted to the PLC at the same time; the PLC controls a core fetching device to move to a set position of the core box; the PLC controls the core fetching device to clamp a hot core; the PLC controls the core fetching device to move to a conveying device; the PLC controls the core fetching device to place the hot core in the conveying device; and the PLC controls the conveying device to achieve conveying action; the PLC controls the core fetching device to reset and prepare for next core fetching work. By the adoption of the PLC-based automatic core fetching and transferring control method for the core shooting machine, full-automatic operation can be achieved, workers do not need to enter a site which is quite severe in environment to conduct operation, the labor intensity of the workers is greatly relieved, and the production safety is improved. Compared with the method adopting a robot to achieve automatic core fetching, the PLC-based automatic core fetching and transferring control method for the core shooting machine has the advantages that the system investment is less, the fault rate is low, maintenance is convenient, and practical significance is achieved.