The invention provides a liquefied gas transport ship, a transverse bulkhead is arranged in a liquid tank in the width direction of the liquid tank, a longitudinal bulkhead is arranged in the length direction of the liquid tank, the transverse bulkhead is perpendicular to the longitudinal bulkhead, the liquid tank is divided into at least one fuel area, a left liquid cargo area and a right liquid cargo area, and the tops of the fuel area and the tops of the two liquid cargo areas communicate with a gas chamber. The liquefied gas transport ship has the beneficial effects that the transverse bulkhead and the longitudinal bulkhead are arranged in the liquid tank, the liquid tank is divided into at least one fuel area and two liquid cargo areas, and cargoes used as fuel are independently stored in the fuel areas, so that the cargoes carried by the liquefied gas carrier can be effectively utilized, and the cost of adding deck tanks and corresponding liquid cargo pipelines is saved; meanwhile, full-load sailing of other liquid cargo areas can be guaranteed, so that a free liquid level does not appear in the liquid cargo areas, and the stability is better; moreover, the fuel area is closer to the middle part of the ship than the head fuel oil tank and the tail fuel oil tank, the ship draught change is not large in the using process, and better floating state stability can be kept.