This paper takes 15000 tons integraltank bitumen ship as the research object, through the selection of cargo hold insulation material, the optimization design of heating system, the optimization arrangement of heating hot coil, so as to solve the problem of heat preservation of integral cargo hold asphalt ship. At the same time, the installation process of foam glass and heating coil is introduced in detail, which has guidance and reference value to the heating system design of the same type of ship.