Based on the consideration of fire insulation performance and overall weight control of cruise ship cabins,a new type of insulation material used in domestically produced cruise ships is introduced,and its lightweight advantages are analyzed.Through experiments,it has been proven that this material has better fire performance than traditional insulation materials.Using ANSYS software,thermodynamic analysis is conducted on typical nodes laid with different materials to obtain structural types that meet fire protection requirements.Then,different structural types are selected for different cabin fire protection requirements,forming a node atlas,which provides reference for the fire insulation of domestic cruise ship cabins in the future.