A hard coating film, comprising: a supporting substrate of polyethyleneterephthalate; a first hard coating layer, formed on one side of the supporting substrate, having a first elastic modulus; and a second hard coating layer, formed on another side of the supporting substrate, having a second elastic modulus, with a difference between the first and the second elastic moduli set to be 500 MPa to 3,000 MPa, wherein the first elastic modulus is 1,500 MPa or less and the second elastic modulus is 2,000 MPa or more, wherein the first and the second elastic moduli mean a value measured according to ASTM D882, wherein the first hard coating layer comprises a first photocurable crosslinking copolymer of a first photocurable elastic polymer in an amount of 20 to 80 weight parts and a mono- to hexa-functional acrylate monomer in an amount of 80 to 20 weight parts, based on 100 weight parts of the first photocurable crosslinking copolymer, wherein the second coating layer comprises a second photocurable crosslink copolymer of a second photocurable elastic polymer in an amount of 5 to 20 weight parts and a tri- to hexa-functional arylate monomer in an amount of 80 to 95 weight parts, based on 100 weight parts of the second photocurable crosslinking copolymer, and inorganic microparticles dispersed in the second photocurable crosslinking copolymer, wherein the first and the second photocurable elastic polymers are the same or different, and independently have an elongation of 15 to 200 %, as measured according to ASTM D638, and wherein the hard coating film exhibits a pencil hardness of 7H or more at a load of 1 kg, the hard coating film further comprising an adhesive film on the first hard coating layer. a supporting substrate of polyethyleneterephthalate; a first hard coating layer, formed on one side of the supporting substrate, having a first elastic modulus; and a second hard coating layer, formed on another side of the supporting substrate, having a second elastic modulus, with a difference between the first and the second elastic moduli set to be 500 MPa to 3,000 MPa, wherein the first elastic modulus is 1,500 MPa or less and the second elastic modulus is 2,000 MPa or more, wherein the first and the second elastic moduli mean a value measured according to ASTM D882, wherein the first hard coating layer comprises a first photocurable crosslinking copolymer of a first photocurable elastic polymer in an amount of 20 to 80 weight parts and a mono- to hexa-functional acrylate monomer in an amount of 80 to 20 weight parts, based on 100 weight parts of the first photocurable crosslinking copolymer, wherein the second coating layer comprises a second photocurable crosslink copolymer of a second photocurable elastic polymer in an amount of 5 to 20 weight parts and a tri- to hexa-functional arylate monomer in an amount of 80 to 95 weight parts, based on 100 weight parts of the second photocurable crosslinking copolymer, and inorganic microparticles dispersed in the second photocurable crosslinking copolymer, wherein the first and the second photocurable elastic polymers are the same or different, and independently have an elongation of 15 to 200 %, as measured according to ASTM D638, and wherein the hard coating film exhibits a pencil hardness of 7H or more at a load of 1 kg, the hard coating film further comprising an adhesive film on the first hard coating layer.