The invention discloses a liquefied natural gas liquid feed system so as to raise distribution and usage rates of liquefied natural gas, provide energy sources for users in a region without a naturalgas pipe network, reduce energy source waste and facilitate protection environment. The liquefied natural gas liquid feed system comprises at least one liquid feed equipment, a liquefied natural gas gasification system, a natural gas steam treatment system, a buffer tank and gas utilization equipment, wherein the liquefied natural gas gasification system comprises at least one gasification and heating unit; the at least one gasification and heating unit comprises a gasifier and a first heater; the natural gas steam treatment system comprises a gas-liquid separator, at least one pressurizing system and a second heater; the buffer tank comprises a buffer tank gas inlet tube and a buffer tank gas outlet tube; and the gas utilization equipment comprises a power generation unit, a gas-fired boiler and a user gas utilization device which are connected with the buffer tank gas outlet tube correspondingly.