The present disclosure provides a method for manufacturing a metal-clad laminated sheet which makes it easy to increase the thickness of an insulating layer and hard to decrease the peel strength of a metal foil with respect to the insulating layer. In the present manufacturing method, a first metal foil (31), a plurality of insulating films, and a second metal foil (32) are superimposed in this order between endless belts and subjected to thermal pressure molding, thereby fabricating an insulating layer (2) from the plurality of insulating films. Each of the plurality of insulating films has a first surface and a second surface, and the ten-point average roughness (Rzjis) of the second surface is greater than the ten-point average roughness (Rzjis) of the first surface. The absolute value of the difference between the ten-point average roughness (Rzjis) of a surface (401), of the insulating layer, (2) contacting the first metal foil (31) and the ten-point average roughness (Rzjis) of a surface (402), of the insulating layer (2), contacting the second metal foil (32) is 0.35 µm or less.