In medical terms, the mandibular protrusion is known as mandibular protrusion, which is divided into odontogenic mandibular protrusion and bony mandibular protrusion. Odontogenic mandibular protrusion can be corrected by wearing orthodontic appliances and traction, etc. Bony mandibular protrusion usually requires surgical correction. 1. Odontogenic mandibular protrusion (1) Wearing orthodontic appliances: the orthodontic mandibular protrusion can be corrected by functional orthodontic appliances and fixed orthodontic appliances. Functional orthodontic appliances are suitable for the correction of mixed dentition. However, if the orthodontic group is in the stage of permanent teeth, it is necessary to wear fixed orthodontic appliances for correction, and some of the teeth may need to be extracted systematically before correction. (2) Traction: Orthodontic treatment can be performed by pulling the maxillary dental arch forward and pulling the upper and lower posterior teeth against each other. 2. Bony mandibular protrusion: If it is osteogenic mandibular protrusion, orthognathic surgery may be needed. Generally, orthodontic-orthognathic combined surgery can be taken. For patients with circumcised teeth, it is recommended to consult the doctor in time and follow the doctor’s instructions for correction so as not to delay the condition.