An electromagnetic wave irradiation molding apparatus comprising: a mold made of an insulating material; and electromagnetic wave irradiation means for irradiating specific electromagnetic waves (x) including a wavelength region of 0.01 m to 100 m, wherein: the mold is separated into a plurality of mold parts (2A, 2B), between which a cavity to be filled with a thermoplastic resin is provided to form a molded article; and a surface layer having a capability to absorb the specific electromagnetic waves (x) is formed on at least a part of an inner wall surface of the cavity, characterized in that said apparatus further comprises vacuum means for evacuating an inside of the cavity, wherein: the plurality of the mold parts (2A, 2B) are comprised of a pair of mold parts, one of which, one mold part, has a fitting recess and the other of which, other mold part, has a fitting protrusion to be fitted into the fitting recess; the cavity provided between the pair of the mold parts (2A, 2B) is closed at its entire periphery by the fitting protrusion fitted into the fitting recess; and the pair of the mold parts (2A, 2B) is configured so as to come close to each other to reduce a capacity of the cavity by allowing the vacuum means to evacuate the inside of the cavity when the thermoplastic resin is melted by irradiation with the specific electromagnetic waves (x) by the electromagnetic wave irradiation means, wherein: a general portion of the plurality of the mold parts (2A, 2B) other than the surface layer is made of silicone rubber or fluoro rubber; and the surface layer is made of silicone rubber or fluoro rubber containing, as a dielectric property-imparting substance, 5 to 90 vol% of one or more of silicon carbide, ferrite, barium titanate, carbon black, and graphite. a mold made of an insulating material; and electromagnetic wave irradiation means for irradiating specific electromagnetic waves (x) including a wavelength region of 0.01 m to 100 m, wherein: the mold is separated into a plurality of mold parts (2A, 2B), between which a cavity to be filled with a thermoplastic resin is provided to form a molded article; and a surface layer having a capability to absorb the specific electromagnetic waves (x) is formed on at least a part of an inner wall surface of the cavity, the mold is separated into a plurality of mold parts (2A, 2B), between which a cavity to be filled with a thermoplastic resin is provided to form a molded article; and a surface layer having a capability to absorb the specific electromagnetic waves (x) is formed on at least a part of an inner wall surface of the cavity, characterized in that said apparatus further comprises vacuum means for evacuating an inside of the cavity, wherein: the plurality of the mold parts (2A, 2B) are comprised of a pair of mold parts, one of which, one mold part, has a fitting recess and the other of which, other mold part, has a fitting protrusion to be fitted into the fitting recess; the cavity provided between the pair of the mold parts (2A, 2B) is closed at its entire periphery by the fitting protrusion fitted into the fitting recess; and the pair of the mold parts (2A, 2B) is configured so as to come close to each other to reduce a capacity of the cavity by allowing the vacuum means to evacuate the inside of the cavity when the thermoplastic resin is melted by irradiation with the specific electromagnetic waves (x) by the electromagnetic wave irradiation means, wherein: a general portion of the plurality of the mold parts (2A, 2B) other than the surface layer is made of silicone rubber or fluoro rubber; and the surface layer is made of silicone rubber or fluoro rubber containing, as a dielectric property-imparting substance, 5 to 90 vol% of one or more of silicon carbide, ferrite, barium titanate, carbon black, and graphite. the plurality of the mold parts (2A, 2B) are comprised of a pair of mold parts, one of which, one mold part, has a fitting recess and the other of which, other mold part, has a fitting protrusion to be fitted into the fitting recess; the cavity provided between the pair of the mold parts (2A, 2B) is closed at its entire periphery by the fitting protrusion fitted into the fitting recess; and the pair of the mold parts (2A, 2B) is configured so as to come close to each other to reduce a capacity of the cavity by allowing the vacuum means to evacuate the inside of the cavity when the thermoplastic resin is melted by irradiation with the specific electromagnetic waves (x) by the electromagnetic wave irradiation means, wherein: a general portion of the plurality of the mold parts (2A, 2B) other than the surface layer is made of silicone rubber or fluoro rubber; and the surface layer is made of silicone rubber or fluoro rubber containing, as a dielectric property-imparting substance, 5 to 90 vol% of one or more of silicon carbide, ferrite, barium titanate, carbon black, and graphite. a general portion of the plurality of the mold parts (2A, 2B) other than the surface layer is made of silicone rubber or fluoro rubber; and the surface layer is made of silicone rubber or fluoro rubber containing, as a dielectric property-imparting substance, 5 to 90 vol% of one or more of silicon carbide, ferrite, barium titanate, carbon black, and graphite.