Minimally invasive surgery is the trend of today’s surgery. Thanks to the advancement of medical science and technology, surgeries that used to require large incisions can be done through very small incisions, bringing many benefits to patients! However, there are still many misconceptions about minimally invasive surgery. Many patients believe that minimally invasive surgery has turned what used to be a major operation into a minor one, which is a complete misconception (some individual doctors may also use this as a gimmick to lure patients into surgery). For the occurrence of intraoperative hemorrhage and other accidents, minimally invasive surgery has great limitations in emergency treatment, revealing and quickly controlling bleeding are obviously limited by the incision, which often leads to increased blood loss and even life threatening! It can be seen that for some difficult surgeries, the additional trauma and bleeding and other risks brought by the significant increase of operation time, whether we should choose minimally invasive surgery needs to be thought carefully! For some larger mediastinal tumors, especially the potentially malignant thymomas, due to their characteristics, the shed tumor cells can be easily implanted in the body, resulting in a serious reduction of the curative effect. It is worthwhile for doctors and patients to weigh the benefits of minimally invasive surgery against the risks of implantation. In today’s unreasonable health insurance system, the high cost of minimally invasive surgery is also a problem.