To provide a method of manufacturing interior parts for a vehicle which can reduce residual stress between a resin base material and a skin material to prevent deformation and does not cause fracture and seeing-through of the skin material.

The method of manufacturing interior parts for a vehicle which are molded by laminating the skin material on the resin base comprises: a base material heating process of heating and softening the resin base material 2; a lamination process of laminating the skin material 4 onto the resin base material 2 heated and softened on the base material heating process and heating the laminated materials; and a molding process of molding the laminated body of the resin base material 2 and the skin material 4 which are heated and softened on the lamination process into a desired shape. Further, the lamination process is characterized in that the skin material is laminated onto the resin base material 2, the laminated body is heated while being pressurized and, thereby, the skin material is closely adhered to the resin base material.