On both sides or one side of the cured product at the sealing glass cloth of the thermally conductive resin composition, the thermally conductive sheet having a cured product layer of the heat conductive silicone compositions, thermally conductive silicone composition organosilicon compound comprises a component and a non-spherical thermally conductive filler, the amount of thermally conductive filler is 250 to 600 parts by weight with respect to the organosilicon compound to 100 parts by weight of the component, and thermally conductive filler thermally conductive sheet DOP oil absorption of at most 80 ml / 100 g, even with a heat conductive filler of inexpensive non-spherical, continuously can be wound into a roll manufactured by coating molding, and high thermal conductivity, low thermal contact resistance, has a high insulating property.