Without biting muscle, people will lose chewing function, so biting muscle can not be completely eliminated, otherwise it will affect chewing and swallowing. For aesthetic reasons, the size and shape of the biting muscle can only be changed, and the main methods include botulinum toxin injection and surgical excision.1. Botulinum toxin injection: Botulinum toxin mainly acts on the nerve and muscle joints, after injection of botulinum toxin, the signal of the nerve can not be transmitted to the biting muscle, and the biting muscle will be gradually paralyzed and atrophy slowly. Generally 2 weeks after botulinum toxin injection begins to take effect, 2-3 months when the effect is the best, but the duration will not be too long, botulinum toxin metabolism will end after about half a year, if you want to continue to thin the bite muscle, you need to repeat the injection, generally every six months 1 injection, a total of 3 injections, you can achieve a stable state; 2, surgical excision: mainly in the mouth to make incisions, according to the patient’s requirements for the elimination of the effect, the Part of the biting muscle is removed, and the removed muscle tissue will not regenerate, so that the purpose of shrinking the biting muscle can be achieved, and the effect can be maintained for a long time. In short, the above methods have a certain risk, it is recommended that you must choose to operate in a regular hospital.