According to the patient’s condition, the protruding upper jaw can be divided into growth period children, growth stop or mild patients, and severe adult patients, which can be corrected by functional orthodontic appliances, maxillary reduction of the number of teeth, and orthodontic orthognathic combination. 1. Children during the growth period: Before the age of 10 to 12 and during the growth period, the protruding upper jaw can be corrected by functional orthodontic appliances such as MRC appliance and beveled guide plate orthodontic appliance. The positional relationship between the upper and lower jaws is improved by adjusting the position of the lower jaw. 2. Stopped growth or mild patients: Stopped growth, mild to moderate adult patients with protruding upper jaw can be corrected by reducing the number of teeth in the upper jaw to alleviate the deformity caused by protruding upper jaw. 3. Severe adult patients: severe adult patients can be corrected by orthodontic orthognathic combined treatment. Reduce the number of teeth in the upper and lower jaws, and then use orthodontic orthognathic treatment. It is recommended that the patient should consult the doctor in time and listen to the doctor’s advice to choose the appropriate method of orthodontic treatment as soon as possible.