The invention discloses a tubular hollow fiber membrane, a preparation method and application.The fiber membrane is of a hollow tubular structure, wherein a tube wall comprises a skin layer and a porous support layer sequentially from outside to inside, the skin layer is made from polyvinyl alcohol, the thickness of the skin layer is 5-20 microns, the porous support layer contains a thermal conductive material, and the thermal conductive material accounts for 40-60% by the total mass of the porous support layer.The thickness of the skin layer is 5-20 microns, the tubular hollow fiber membrane is advantageous to permeation of water vapor in the membrane, and the production costs are also controlled.In addition, the porous support layer of the tubular hollow fiber membrane contains the thermal conductive material with the mass fraction of 40-60%, and the thermal conductivity coefficient is improved.