The nose brace according to the present invention is a nose brace for correcting the cartilage of the nose, a front insertion part for insertion into the nasal cavity, a rear body part formed behind the front insertion part and serving as a handle, and the rear body It includes a handle portion formed at the rear of the part, the front insertion portion, the rear body portion and the handle portion are integrally formed, the handle portion is formed longer than the front insertion portion, and the front insertion portion is inserted into the nasal cavity to the skin inside the nasal cavity In contact, the force is applied to the rear body portion and the handle portion to be configured to apply pressure to the skin inside the nasal cavity to the front insertion portion, wherein the front insertion portion gradually increases toward the boundary portion with the rear body portion from the front end portion. It is characterized in that it is formed to have a circular cross section of a larger diameter. According to the present invention, the user of the nose self-correcting device can directly deform the cartilage of the nose by self-correcting, thereby preventing side effects caused by surgery, reducing cost and time, and being able to gently insert into the nasal cavity, while being strong It is configured not to bend even by force, so it minimizes pain felt during correction and can increase the effect of correcting the nose cartilage. In addition, the self-calibrator himself can easily check the position of the correction by checking the depth at which the orthodontic device is inserted into the nose, and it is configured to minimize the effect on the nasal tissue to prevent skin damage and contamination surrounding the nose cartilage. In addition, it is easy to apply force during self-calibration, but is configured to minimize the possibility of hitting an external object, thereby improving the effectiveness of the correction and preventing injury.본 발명에 따른 코 교정기는