Minimally invasive thoracoscopic surgery has great advantages in thoracic surgery. It is now more widely practiced in adult surgery. However, in children, minimally invasive thoracoscopic surgery is still in its infancy. Since 2010, we have been carrying out minimally invasive thoracoscopic surgery in a comprehensive way, which has made our pediatric thoracic department a leader in minimally invasive thoracoscopic treatment for children in China. I. What diseases can minimally invasive thoracoscopic surgery treat and what is its scope of application? 1.Funnel chest (Thoracoscopic assisted Nuss minimally invasive funnel chest correction) 2.Purulent chest and pleural effusion (Thoracoscopic purulent chest contouring, stripping surgery) 3.Lung disease (Thoracoscopic lobectomy, lung wedge resection, lung biopsy) 4.Mediastinal tumor (Thoracoscopic mediastinal tumor resection) 5.Diaphragmatic hernia, diaphragmatic bulge (Thoracoscopic diaphragmatic folding and repair) 6.Esophageal hiatal hernia, gastro-esophageal reflux (Laparoscopy) Hiatal hernia repair, gastric fundoplication) 7, esophageal stenosis, atresia (thoracoscopic esophageal anastomosis, kyphoplasty) Second, what are the advantages of thoracoscopic surgery minimally invasive thoracoscopic surgical treatment compared with the traditional open surgery, its advantages are obvious: 1, minimally invasive, beautiful, there is no large incision of open surgery, only three and the following small incision of the luminal lens, 2, do not need the traditional open surgery to open up the ribs, so the pain is very mild, and fast recovery 3, due to the open surgery, the pain of the surgery and its slightest, and fast recovery 3, due to the open surgery, the pain of the surgery and its slightest. The postoperative pain is mild and the postoperative recovery is fast. 3. As the postoperative pain is mild, the children will not be reluctant to take deep breaths or cough due to too much pain, which greatly reduces the incidence of pneumonia and atelectasis in the children after the operation. 4.Traditional open heart surgery, especially among children at a young age, is prone to postoperative fusion of ribs, leading to thoracic deformity or even scoliosis in the future, which brings great pain to the children and their families. Thoracoscopic minimally invasive surgery completely avoids this complication. 5. Thoracoscopy has magnifying effect and better vision than open surgery, which enables the surgeon to operate more accurately and achieve better therapeutic effect 6. When applying Nuss minimally invasive surgery to treat funnel chest, the application of thoracoscopy with direct visualization assistance can greatly improve the safety of the surgery and the accuracy of the correction, avoiding blind penetration of the blindness.