A method and a device for supplying the nature gas are provided to separate the nature gas to the each component according to the use. A method for supplying the nature gas comprises: a step of liquidizing the produced natural gas; a step of transporting the liquefied natural gas; and a step of separating the each hydrocarbon components included in the liquefied natural gas transported to the demanding place. The solid material is separated from the natural gas before the liquefaction of the natural gas. The freezable component is separated from the natural gas in the liquefaction of natural gas. The separation step of the hydrocarbon component is consisting of a first separation separating the natural gas with the high calorific value and a second step of separating the natural gas with the low calorific value.
