Abstract: A method of producing a double-sided metal-clad laminate comprises a supplying step of supplying an insulating film interposed between two metal foils continuously to between a pair of endless belts, a heat and pressure applying step of forming a laminate of the insulating film and the metal foils by heating and applying a pressure to the insulating film and the metal foils under predetermined condition while the insulating film is interposed by the two metal foils in between the endless belts, and a cooling step of cooling the laminate, wherein the insulating film has a thickness of 10 to 500 ?m, a degree of planar orientation of 30% or more, an average coefficient of linear expansion in an MD direction of ?40 to 0 ppm/K and an average coefficient of linear expansion in a TD direction of 0 to 120 ppm/K.