In general, pursing your lips for a long period of time will not improve a protruding mouth. A protruding mouth is often the result of two lips protruding outward when the lips are naturally relaxed. It is usually caused by malocclusion or jaw deformity, and requires orthodontic treatment or orthognathic surgery, and cannot be improved by pursing the lips for a long period of time. If you want to improve the situation, it is recommended to consult a doctor in time for treatment under the doctor’s advice. If the protruding mouth is not serious, it can be improved by orthodontic treatment. If the bumpy mouth is obvious, it should be judged by the doctor whether orthognathic surgery can be used to improve the symptoms of the bumpy mouth. At the same time, the formation of the bumpy mouth is mostly related to bad habits such as breathing with the mouth open and sucking the fingers, etc. Changing bad habits in time can prevent the symptoms of the bumpy mouth to a certain extent, and will help the recovery of the bumpy mouth to a certain extent. In addition, long-term pursing lips may increase the risk of chronic lipitis. Because long-term pursed lips will make the saliva in the mouth stained lips, lips if a long time alternating wet and dry, the probability of lipitis may increase, so it is recommended to avoid long-term pursed lips.