A lamination apparatus 100 for a secondary battery, which thermally bonds a separator sheet 20 to an electrode plate 11 in a state in which the separator sheet 20 and the electrode plate 11 are laminated, the lamination apparatus 100 comprising: a roller part 110 comprising a separator supply roller 111 supplying the separator sheet 20 and an electrode supply roller 112 supplying the electrode sheet 10; a cutting part 120 cutting the electrode sheet 10 supplied by the electrode supply roller 112 to manufacture a plurality of electrode plates 11; a first transfer part 130 comprising a first conveyor belt 131 transferring the electrode plates 11 cut by the cutting part 120 at the same interval; an inspection part 140 inspecting whether the electrode plates 11 transferred by the first transfer part 130 are defective; a second transfer part 150 comprising a second conveyor belt 151 transferring a normal electrode plate 11a, which is determined as a normal electrode plate by the inspection part 140, of the electrode plates; and a lamination part 160 thermally bonding the normal electrode plate 11a transferred by the second transfer part 150 to the separator sheet 20 supplied by the separator supply roller 111, characterized in that the inspection part 140 comprises a photographing member 141 photographing the electrode plate 11 transferred by the first transfer part 130 and an inspection member 142 comparing a photograph of the electrode plate 11, which is photographed by the photographing member 141, with an inputted photograph of the electrode plate 11 to inspect whether the electrode plate 11 is defective, in that the inspection part 140 further comprises a discharge member 143 discharging a defective electrode plate 11b, which is determined as a defective electrode plate by the inspection member 142, from the first transfer part 130, and in that the first transfer part 130 and the second transfer part 150 rotate at the same rotation rate to uniformly maintain a distance between the electrode plates transferred by the first transfer part 130 and the second transfer part 150, and when the defective electrode plate 11b of the electrode plates 11 transferred by the first transfer part 130 is discharged, the rotation rate of the first transfer part 130 increases more than that of the second transfer part 150 to re-adjust a distance between a front electrode plate and a rear electrode plate with respect to the defective electrode plate 11b. a roller part 110 comprising a separator supply roller 111 supplying the separator sheet 20 and an electrode supply roller 112 supplying the electrode sheet 10; a cutting part 120 cutting the electrode sheet 10 supplied by the electrode supply roller 112 to manufacture a plurality of electrode plates 11; a first transfer part 130 comprising a first conveyor belt 131 transferring the electrode plates 11 cut by the cutting part 120 at the same interval; an inspection part 140 inspecting whether the electrode plates 11 transferred by the first transfer part 130 are defective; a second transfer part 150 comprising a second conveyor belt 151 transferring a normal electrode plate 11a, which is determined as a normal electrode plate by the inspection part 140, of the electrode plates; and a lamination part 160 thermally bonding the normal electrode plate 11a transferred by the second transfer part 150 to the separator sheet 20 supplied by the separator supply roller 111, characterized in that the inspection part 140 comprises a photographing member 141 photographing the electrode plate 11 transferred by the first transfer part 130 and an inspection member 142 comparing a photograph of the electrode plate 11, which is photographed by the photographing member 141, with an inputted photograph of the electrode plate 11 to inspect whether the electrode plate 11 is defective, in that the inspection part 140 further comprises a discharge member 143 discharging a defective electrode plate 11b, which is determined as a defective electrode plate by the inspection member 142, from the first transfer part 130, and in that the first transfer part 130 and the second transfer part 150 rotate at the same rotation rate to uniformly maintain a distance between the electrode plates transferred by the first transfer part 130 and the second transfer part 150, and when the defective electrode plate 11b of the electrode plates 11 transferred by the first transfer part 130 is discharged, the rotation rate of the first transfer part 130 increases more than that of the second transfer part 150 to re-adjust a distance between a front electrode plate and a rear electrode plate with respect to the defective electrode plate 11b.