Abstract: Based on high-definition video equipment, intelligent gate control device, train and vehicle detection sensors, the automatic protection system for level corridor of railway freight yard adopted computer network technology, Internet of Things technology, automatic control theory and information processing and integration technology to implement automatic collection of image information of train passing through crossing and the alarm of train approaching at the crossing, automatic control, remote monitoring and centralized management of lifting and dropping of intelligent gate. After the system is put into use, it can strengthen the technical prevention, effectively control the occurrence of safety accidents, improve the level of science and technology management for level corridor of railway freight yard, and minimize the potential safety hazards.