Preoperative precautions: 1. Discontinue anticoagulants for at least 10 days for the purpose of: reducing intraoperative and postoperative bleeding to form hematomas. 2.Adjust blood glucose to below 8 on fasting and below 10 after meals. 3.No infectious diseases such as cold, fever and periodontitis should be present. The surgical area must not have infectious skin diseases or unhealed skin wounds. 4.The clinical symptoms are clear, persist for more than 3 months, and, after more than 3 months of conservative treatment is ineffective, those who affect normal work and life can be hospitalized for minimally invasive surgery treatment. 5.A follow-up file should be established before surgery to firstly assess the severity of the disease before surgery for efficacy assessment.