The utility model discloses a pipeline used for supplying natural gas to a wharf boat. The pipeline comprises a metal rubber hose body, an emergency snap valve and hose connectors; the hose connectors are respectively mounted at two ends of the metal rubber hose body, and the hose connector at one end is connected to one end of the emergency snap valve through a flange while the other end of the same is connected with a gas supply port of a gas supply device through a flange; the hose connection at the other end is connected with a reserved gas supply port of the gas supply pipeline on the wharf boat through a flange, the metal rubber hose body comprises a rubber layer and a metal wire layer, the metal wire layer is interwoven and spirally wound by a plurality of metal wires, and the metal wire layer is coated with the rubber layer. The natural gas is supplied to the wharf boat through the pipeline, and non-operational performance in supplying the gas to the wharf boat through the metal pipeline, inconvenience caused by handling canned liquefied petroleum gas and leakage risk brought by hoarding of large amount of the canned liquefied petroleum gas can be avoided.