A thermoplastic resin, comprising: an alkyl acrylate-alkyl methacrylate graft copolymer (A), or an alkyl acrylate-alkyl methacrylate graft copolymer (A); and a matrix resin (B) comprising one or more selected from the group consisting of an alkyl methacrylate polymer and an alkyl methacrylate-alkyl acrylate copolymer, wherein a transparency (haze value), measured according to ASTM D-1003 under a condition of 0.15 mm thickness, is 2 or less, and a transparency measured under a condition of 3 mm thickness is 4 or less, a total content of the alkyl acrylate is 20 to 50 % by weight, and a butyl acrylate coverage value (X) as calculated by Equation 1 below is 50 or more: X = G − Y / Y × 100 , wherein G represents a total gel content (%) of the thermoplastic resin, and Y represents a content (% by weight) of butyl acrylate in the gel of the thermoplastic resin, wherein the copolymer (A) comprises 25 to 50 % by weight of an alkyl acrylate rubber (a-1) having a DLS average particle diameter of 40 to 120 nm or a TEM average particle diameter of 25 to 100 nm; and 50 to 75 % by weight of an alkyl acrylate-alkyl methacrylate copolymer (a-2) based on 100 % by weight in total of the copolymer (A), wherein the copolymer (A) has a grafting degree of 60 to 200 %, and the copolymer (a-2) has a weight-average molecular weight of 40,000 to 120,000 g/mol, and wherein the total content of the alkyl acrylate, the butyl acrylate coverage value, the total gel content of the thermoplastic resin, the content of butyl acrylate in the gel, the grafting degree and the weight-average molecular weight are measured as disclosed in the specification. an alkyl acrylate-alkyl methacrylate graft copolymer (A), or an alkyl acrylate-alkyl methacrylate graft copolymer (A); and a matrix resin (B) comprising one or more selected from the group consisting of an alkyl methacrylate polymer and an alkyl methacrylate-alkyl acrylate copolymer, wherein a transparency (haze value), measured according to ASTM D-1003 under a condition of 0.15 mm thickness, is 2 or less, and a transparency measured under a condition of 3 mm thickness is 4 or less, a total content of the alkyl acrylate is 20 to 50 % by weight, and a butyl acrylate coverage value (X) as calculated by Equation 1 below is 50 or more: X = G − Y / Y × 100 , wherein G represents a total gel content (%) of the thermoplastic resin, and Y represents a content (% by weight) of butyl acrylate in the gel of the thermoplastic resin, wherein the copolymer (A) comprises 25 to 50 % by weight of an alkyl acrylate rubber (a-1) having a DLS average particle diameter of 40 to 120 nm or a TEM average particle diameter of 25 to 100 nm; and 50 to 75 % by weight of an alkyl acrylate-alkyl methacrylate copolymer (a-2) based on 100 % by weight in total of the copolymer (A), wherein the copolymer (A) has a grafting degree of 60 to 200 %, and the copolymer (a-2) has a weight-average molecular weight of 40,000 to 120,000 g/mol, and wherein the total content of the alkyl acrylate, the butyl acrylate coverage value, the total gel content of the thermoplastic resin, the content of butyl acrylate in the gel, the grafting degree and the weight-average molecular weight are measured as disclosed in the specification. <EOS>