Research conclusions ： The paper introduces a video supervision and control system scheme of the marshalling yard with Xinfeng Zhen marshalling yard as an example. Through analysis and comparison，the technology of analogue acquisition plus digital processing can make good use of existing equipments and trunk transmission platform, and meet the requirements of the screen control and sharpness of the image in control center. The method adopts H. 264 encoding， with its high adaptability code stream of network，powerful error correcting capability，and can be more suitable for IP and wireless networking application. Meanwhile, lightning measures shall be adopted to ensure the operation of the system.