The disjunction of water rights allocation index and water-fetching management leads to water-fetching from the Yellow River in some provinces exceed the water rights allocation index. ET management can provide regional water cycle process and real water consumption and provide technical support for water-saving management of regional water resources department and waterfetching of river department. In this paper, the water resources management mode based on ET was studied. Then ET management was applied in the region from Lanzhou to Toudaoguai in the Yellow River Basin with specific application idea. In addition, the relation between incoming flow and water consumption in the study area was built to serve for water-fetching management of river department.