A metal-clad laminate sheet manufacturing method characterized in that a laminate sheet is formed by bonding a thermoplastic liquid crystal polymer film and a metal sheet, and the laminate sheet is subjected to thermal treatment fulfilling the following conditions (1) and (2). (1) The thermal treatment temperature is at least 1℃ higher and less than 50℃ higher than the melting point of the thermoplastic liquid crystal polymer film. (2) The thermal treatment duration between 1 second and 10 minutes, inclusive.
