The present invention relates to a cold heat recovery apparatus using an LNG fuel which recovers cold heat from the LNG fuel when an evaporated gas from a liquefied gas is re-liquefied as cargo to reduce costs required for installing and operating a re-liquefying apparatus and reduce energy consumption and environmental pollution materials without consuming additional energy in a re-liquefying process, and to a liquefied gas carrier including the same. According to the present invention, the cold heat recovery apparatus, which uses cold heat from an LNG fuel to treat the evaporated gas generated in a liquefied gas tank, includes a cold heat usage unit that uses the cold heat from an LNG, which is supplied as fuel from the LNG fuel tank, which stores LNG, to an engine, to treat the evaporated gas generated in the liquefied gas tank.