The causes of hunchback in 12-year-old girls are mainly due to habit, spinal tuberculosis, spinal fracture, vitamin D deficiency, etc. For the different causes and degrees of hunchback, targeted treatment is needed, and there may be huge differences in the treatment methods, including correcting habits, primary treatment, surgical treatment, and so on. 1. Habits: Correcting bad sitting and standing habits can be done by practicing proper sitting posture, keeping the back straight, tilting the body slightly backward, leaning the shoulders against the back of the chair, and cushioning the hollow part of the waist; when standing, the jaw is slightly closed, the two shoulders are flush, the eyes are looking straight ahead, the hands naturally droop, the legs are close together with the tips of the feet pointing forward, and the daily exercise needs to be strengthened. 2. Spinal tuberculosis: For hunchback caused by spinal tuberculosis, it is necessary to treat tuberculosis. If there is no surgical indication, systemic anti-tuberculosis treatment and local braking are needed; if there is surgical indication, it is necessary to make incision and drainage of pus, removal of the lesion as well as spinal fusion and orthopedic surgery. 3. Spinal fracture: Hunchback caused by spinal fracture needs to be corrected and fixed, bed rest and early exercise as prescribed by doctor. 4. Vitamin D deficiency: Vitamin D deficiency will lead to insufficient calcification of bones and cause spinal deformity. Supplement vitamin D under doctor’s guidance and get more sunshine in order to satisfy the calcium elements needed for bone growth. It is recommended that patients go to the hospital as soon as possible for examination, to clarify the cause of hunchback, to carry out targeted treatment, to avoid delaying the treatment time.