Vocal cord surgery is in principle not a particularly major surgery, but one type of surgery to be excluded is that of a tumor on the vocal cord, which, regardless of the size of the surgery it appears, has its own post-surgical symptoms of laryngeal edema that are more pronounced. So now the surgical equivalent of surgery is very small, but the post-operative risks are relatively greater and can easily lead to clinical symptoms such as laryngeal edema. The vocal cord surgery itself is more common for vocal cord nodule removal, vocal cord polyp removal, as well as vocal cord leukoplakia, vocal cord papilloma and so on. If malignant changes occur, such as laryngeal cancer, it must be a major surgery and may be treated with radiotherapy after surgery.