Abstract: The papper designs a digital mine video monitoring system based on Industrial Ethernet. The system is composed of front-end acquisition system, intermediate transmission system, background processing system and field TV wall. Based on the analysis of network trend and real-time performance of the video monitoring system, The paper introduces the system structure schematic diagram and hardware design in detail. The application in a large number of coal mines in China shows that the system is advanced in technology, easy to expand, convenient to maintain, safe and reliable.