Orthognathic surgery usually resumes normal life 3 to 6 months after surgery, but of course it is not completely absolute, it is also related to the degree of surgical damage, personal constitution and post-operative care. 1. Degree of surgical damage: If the teeth are misaligned or malocclusion is serious, the surgical damage will be larger and the recovery time will be extended accordingly. 2. Individual physique: individual differences, recovery time is not the same. People with strong physique will recover faster and in a relatively shorter time. 3. Postoperative care: After surgery, you should pay attention to rest, eat high protein diet to promote bone recovery, pay attention to wound hygiene to avoid infection, postoperative care in place and no underlying diseases such as diabetes, etc., the recovery time is shorter. After orthognathic surgery, you should also pay attention to a light diet and consume easy-to-digest foods to promote wound recovery. Avoid eating hard food, which may cause burden on the jaw joints.