In the process of natural gas exploitation, with the deepening of gas field exploitation and the prolongation of gas well production time, tube and case pressure will continue to decline and formation energy will gradually decrease. When the gas well production decreases to a certain extent, the liquid carrying capacity will decrease, and the fluid accumulation in the well will gradually increase. The use of capillary precise bubble drainage technology can realize the intelligent, all-year, all-weather, remote automatic control and local manual control of the two modes of accurate injection to the bottom of the well to improve the production of gas Wells.