A molded article comprising a resin part formed with a cellulose-reinforced thermoplastic resin composition, the cellulose-reinforced thermoplastic resin composition comprising an ester-bonded composite resin of a hydroxy group of cellulose and a polyolefin resin having a carboxy group and a crosslinked structure, wherein a content of a cellulose component in the ester-bonded composite resin is 9.0 to 42% by mass, and a tensile strength of a resin molded body formed with the cellulose-reinforced thermoplastic resin composition measured in accordance with JIS K 7161 is 40 MPa or more; wherein the polyolefin resin having a carboxy group and a crosslinked structure is a polyolefin resin having a crosslinked structure such that a carbon atom in a main chain of the polyolefin resin modified by grafting an unsaturated carboxylic acid or an anhydride thereof and a carbon atom in a main chain of a polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof are bonded at two or more sites; wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector or a pulley: wherein the molded article is obtained by heating and kneading the thermoplastic resin composition comprising 5 to 70 parts by mass of cellulose based on 100 parts by mass of a thermoplastic resin; and an organic peroxide at a temperature where the organic peroxide existing in the composition decomposes or higher, and wherein the thermoplastic resin comprises the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof and the polyolefin resin modified with an unsaturated carboxylic acid or an anhydride thereof; wherein the cellulose is a fiber and the hydroxyl group is on the surface; and wherein the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof is a polyethylene resin, wherein the polyethylene is selected from an ethylene homopolymer and an ethylene- α -olefin copolymer, wherein the α-olefin is 1-butene, 1-pentene, 1-hexene or 1-octene. a content of a cellulose component in the ester-bonded composite resin is 9.0 to 42% by mass, and a tensile strength of a resin molded body formed with the cellulose-reinforced thermoplastic resin composition measured in accordance with JIS K 7161 is 40 MPa or more; wherein the polyolefin resin having a carboxy group and a crosslinked structure is a polyolefin resin having a crosslinked structure such that a carbon atom in a main chain of the polyolefin resin modified by grafting an unsaturated carboxylic acid or an anhydride thereof and a carbon atom in a main chain of a polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof are bonded at two or more sites; wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector or a pulley: wherein the molded article is obtained by heating and kneading the thermoplastic resin composition comprising 5 to 70 parts by mass of cellulose based on 100 parts by mass of a thermoplastic resin; and an organic peroxide at a temperature where the organic peroxide existing in the composition decomposes or higher, and wherein the thermoplastic resin comprises the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof and the polyolefin resin modified with an unsaturated carboxylic acid or an anhydride thereof; wherein the cellulose is a fiber and the hydroxyl group is on the surface; and wherein the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof is a polyethylene resin, wherein the polyethylene is selected from an ethylene homopolymer and an ethylene- α -olefin copolymer, wherein the α-olefin is 1-butene, 1-pentene, 1-hexene or 1-octene. wherein the molded article is obtained by heating and kneading the thermoplastic resin composition comprising 5 to 70 parts by mass of cellulose based on 100 parts by mass of a thermoplastic resin; and an organic peroxide at a temperature where the organic peroxide existing in the composition decomposes or higher, and wherein the thermoplastic resin comprises the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof and the polyolefin resin modified with an unsaturated carboxylic acid or an anhydride thereof; wherein the cellulose is a fiber and the hydroxyl group is on the surface; and wherein the polyolefin resin not modified with an unsaturated carboxylic acid or an anhydride thereof is a polyethylene resin, wherein the polyethylene is selected from an ethylene homopolymer and an ethylene- α -olefin copolymer, wherein the α-olefin is 1-butene, 1-pentene, 1-hexene or 1-octene.