The control system of the feeding trolley adopts the programmable controller (PLC) monitoring system of Siemens s7-1200 series and adopts the upper computer and the HMI seven-inch display screen of Siemens to monitor and control.Frequency converter MM440 model.The composition, hardware and software design and control principle of the feeding trolley control system and the monitoring system are described, and the automatic process of loading and unloading of the feeding trolley is realized.To meet the needs of blast furnace iron.