Whistling teeth, or buck teeth, is a popular term for protruding teeth, which has a serious impact on facial aesthetics. For different types of buck teeth correction methods are not the same, specifically divided into the following: 1, mild and moderate bony buck teeth can be corrected by means of fixed orthodontic appliances; 2, simple teeth protruding buck teeth can choose the extraction of orthodontic methods, through the reduction of the number of teeth to obtain the inner gap, and thus improve the protruding side of the appearance of the 3, severe bony problems caused by the buck teeth, the need for surgery for correction. Surgical methods include maxillary osteotomy and subapical osteotomy. It needs to be performed in adulthood and the cost is high, but it can maximize the improvement of facial aesthetics and achieve cosmetic effect; 4. Children with bony buck teeth in the growth and development period, the bone development is still plastic, and orthopedic treatment can be carried out on the jawbone through orthopedic force such as extra-oral arches or functional orthodontic appliances, so as to make the intra-oral environment coordinated step by step and to promote normal jawbone development, thus to improve the protruding side appearance.