LNG is transported by tanker to the LNG gasification station, and the LNG unloading booster is used to increase the pressure in the tanker, and the LNG in the tanker is sent to the LNG cryogenic storage tank for storage. When draining from the LNG storage tank, the pressure of the storage tank is increased by the self-pressurization system of the storage tank, and then the liquid phase outlet valve of the storage tank is opened, and the LNG in the storage tank is sent to the vaporizer through the pressure difference. , It is sent to the municipal gas pipeline network after pressure regulation, metering, odorizing and other processes. When the outdoor environment temperature is low and the natural gas temperature at the outlet of the air-heated vaporizer is lower than 5°C, a water bath heater needs to be connected in series at the outlet of the air-heated vaporizer to heat the gasified natural gas.