The invention discloses a novel LNG gas-feeding integrated module device, and belongs to the field of ship transportation. The device is designed according to the standards of ISO shipping containers, and comprises a liquefied natural gas gas-feeding device case and a case frame; wherein the liquefied natural gas gas-feeding device case comprises a liquefied natural gas storage tank, an operation valve case, a liquid transportation pipeline, a gasifying device, an emergency cut-off device, a gas flowmeter, a gas transportation pipeline, a pressure releasing pipe, and a vertical ladder; the case frame comprises a front end frame, a rear end frame, a upper side beam, a lower side bean, a diagonal brace, an upper diagonal member, a lower diagonal member, a bottom plate, and a bearer; the operation valve case comprises a liquid-phase operation pipeline, a gas-phase operation pipeline, a backup pipeline, and a control system, and the liquid-phase operation pipeline, gas-phase operation pipeline, backup pipeline, and control system are concentratedly arranged through low-temperature stainless steel pipes. The device solves the problems of difficult gas feeding for a diesel oil-LNG bi-fuel source ship. A gas-feeding station can utilize the integrated module device to safely butt-join a diesel oil-LNG bi-fuel source diesel engine, provide gas for the ship to be fueled, and control the gas volume. The transportation cost is reduced, and the transportation efficiency is improved.