A method for manufacturing a metal-clad laminate sheet including forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and providing the laminate sheet with a heat treatment which satisfies conditions (1) and (2) below: (1) a heat treatment temperature ranges between 1°C inclusive and 50°C exclusive higher than a melting point of the thermoplastic liquid crystal polymer film. (2) a time for the heat treatment ranges from one second to 10 minutes.