The invention discloses a control system for a turn roadway stereoscopic warehouse and belongs to the technical field of logistics automation. The control system comprises a monitoring management system, a stacking machine control system and a conveyer control system, wherein a sensor arranged in the stacking machine control system for judging the running position of a stacking machine comprises two limiting switches, two speed reducing electromagnetic switches and two roadway recognition switches, all of which are arranged on a lower cross beam of the stacking machine, and correspondingly, two roadway limiting switch plectrums, two roadway end position speed reducing magnets, two bend speed reducing magnets and two roadway recognition switch plectrums are arranged on a U-shaped rail. The control system is simple in structure and convenient to construct; the electromagnetic switches are used as speed reducing detection switches in the running direction of the stacking machine, the sensor is in a non-contact type, and reliability is high; and the stacking machine runs in a U-shaped roadway and is in communication with a conveyor system and an upper computer through the wireless Ethernet, and convenience and rapidness are achieved.