Kaner well is a special irrigation system, which consists of shaft, underground canal, open canal and so on. Its structural principle is to find its water source at snowwater diving places in high mountains, drill a shallow and deep shaft at certain intervals, and then build underground canals at the bottom of the well according to the topography, communicate with each well and divert water. The outlet of the underground channel is connected with the ground channel, and the groundwater is diverted to the mulberry field for surface irrigation.