Preoperative precautions: 1. Discontinue the use of anticoagulants for at least 10 days, purpose: to reduce intraoperative and postoperative bleeding to form hematomas 2. Adjust the blood glucose to less than 8 on an empty stomach and less than 10 after meals. 3.No infectious diseases exist, such as cold, fever and periodontitis. There should be no skin infectious diseases or unhealed skin wounds in the surgical area. 4.Clinical symptoms are clear, persist for more than 3 months, and, after more than 3 months of conservative treatment is ineffective, affecting normal work and life can be hospitalized to receive minimally invasive surgical treatment. 5.A follow-up file should be set up before surgery to firstly assess the severity of the disease before surgery in order to evaluate the efficacy.