A jig device for inspecting quality of a secondary battery, which fixes the secondary battery and inspects quality of the secondary battery using ultrasonic waves, the jig device comprising: an ultrasonic inspection device; a jig base having a plate shape and a seating hole; a wall part protruding upward along a circumference of the jig base; a fixed module mounted on the jig base at one side of the seating hole; a first gliding module mounted on the jig base at a side opposite to the fixed module and glidable toward the fixed module; a second gliding module that is glidable in a direction perpendicular to the first gliding module, mounted on any one position of the wall part; and a support part extending across the seating hole, the support part having a first end connected to the fixed module and a second end connected to the first gliding module and on which the secondary battery is placed, wherein a masking block is mounted on one or more portions of the fixed module and the first gliding module, which comes into contact with an edge of the secondary battery when placed on the support part, and when the masking block contacts the edge of the secondary battery, the secondary battery is fixed, wherein another masking block is detachably mounted on a portion of the second gliding module, which comes into contact with the edge of the secondary battery, wherein an additional masking block is detachably mounted on the wall part opposite to the second gliding module such that, when the secondary battery is moved by the second gliding module, the additional masking block comes into contact with the secondary battery, wherein the masking block, the another masking block and the additional masking block are made of a material having elasticity to prevent the sealing part of the secondary battery from being pressed to be deformed, wherein the first gliding module is detachable from the jig base, and wherein the support part has a size at which the entire seating hole is not covered and is separable from the fixed module and the first gliding module. an ultrasonic inspection device; a jig base having a plate shape and a seating hole; a wall part protruding upward along a circumference of the jig base; a fixed module mounted on the jig base at one side of the seating hole; a first gliding module mounted on the jig base at a side opposite to the fixed module and glidable toward the fixed module; a second gliding module that is glidable in a direction perpendicular to the first gliding module, mounted on any one position of the wall part; and a support part extending across the seating hole, the support part having a first end connected to the fixed module and a second end connected to the first gliding module and on which the secondary battery is placed, wherein a masking block is mounted on one or more portions of the fixed module and the first gliding module, which comes into contact with an edge of the secondary battery when placed on the support part, and when the masking block contacts the edge of the secondary battery, the secondary battery is fixed, wherein another masking block is detachably mounted on a portion of the second gliding module, which comes into contact with the edge of the secondary battery, wherein an additional masking block is detachably mounted on the wall part opposite to the second gliding module such that, when the secondary battery is moved by the second gliding module, the additional masking block comes into contact with the secondary battery, wherein the masking block, the another masking block and the additional masking block are made of a material having elasticity to prevent the sealing part of the secondary battery from being pressed to be deformed, wherein the first gliding module is detachable from the jig base, and wherein the support part has a size at which the entire seating hole is not covered and is separable from the fixed module and the first gliding module.