1.Simple incisor protrusion, but normal skeletal development, facial shape is not protruding or even slightly deflated The treatment of such patients should give priority to facial shape, and tooth extraction is contraindicated because it will make the original slightly deflated facial shape even more deflated. 2.Protruding incisors, slightly protruding facial shape, but normal skeletal development The treatment of these patients should consider tooth extraction because space is needed to make the incisors move inward and change the facial shape of the patient at the same time. 3.Protruding incisors with protruding facial shape but normal skeletal development The treatment of these patients should consider tooth extraction treatment, and the help of bone implants is needed to make the space for tooth extraction to move the incisors inward and change the facial shape of the patient better. 4.Protruding incisors, protruding bones, and protruding facial shape The treatment for this type of patients should consider orthodontic treatment combined with surgical treatment, aligning teeth before surgery, and then moving teeth and protruding bones outward and backward through surgical methods to achieve the purpose of improving facial shape.