This requires specific analysis of specific problems, depending on the baby's age and the degree of deformity, mild is not needed. For children with moderate or severe skull abnormalities such as flat head, oblique head and navicular head, or the recovery period after surgical treatment such as premature closure of cranial suture, Star orthopedic helmet is an effective improvement method. The following is the classification of oblique head deformity, and the degree of deformity can be judged by the corresponding map. The following is the first grade (grade 5) of oblique head deformity classification: asymmetry is within the normal range, and interventional therapy is not recommended. Grade ⅱ: only slight or moderate asymmetry in the posterior skull quadrant, no secondary changes; It is suggested to adjust the sleeping position to improve. Grade 3: two quadrants, moderate and severe posterior cranial quadrants flat, slight contralateral anterior cranial quadrants flat, showing anterior ear displacement. Grade 4: three quadrants, with severe posterior cranial flattening, moderate anterior cranial flattening, obviously asymmetrical orbit, ipsilateral forehead bulge and ear displacement; Cranioplasty is recommended. Grade 5: Four quadrants, the posterior skull is severely flattened, and the flattened area crosses the midline of the quadrant, resulting in contralateral deformity, which seriously affects the contralateral anterior skull, including asymmetric orbit, flat cheeks, obvious ipsilateral frontal eminence and ear displacement; Cranioplasty is recommended.