1, the treatment of gallbladder stones and bile duct stones: The surgical treatment of gallbladder stones and bile duct stones currently mainly applies laparoscopy, cholangioscopy, duodenoscopy, and intraoperative lithotripsy and other minimally invasive treatment means, usually laparoscopy alone can be used to treat gallbladder disease, can be combined with cholangioscopy, duodenoscopy to treat combined bile duct stones, both the professional term so-called “two-scope or three-scope combined The surgery can be combined with choledochoscopy and duodenoscopy to treat combined bile duct stones, which is called “two or three mirrors combined” in professional terminology, so that the trauma is minimal and the efficacy is optimal. 2.Hepatic cysts: those with diameters greater than 5cm, located on the surface of the liver and prone to rupture need surgical treatment, and most cases can be treated minimally invasively under laparoscopy. 3.Minimally invasive laparoscopic surgery for liver tumors: fine anatomy, less surgical bleeding, less side injuries and fast postoperative recovery. 4.Anal preservation treatment of low rectal cancer: laparoscopic minimally invasive surgery is operated under the monitor, the TV image has the effect of magnification, the tissue level is more clearly distinguished, all operations are completed under direct vision, and the surgical operation is more delicate to avoid side injuries. The ultrasonic knife, high-frequency electric knife and Ligasure system used in laparoscopic minimally invasive surgery can reduce intraoperative bleeding. For low rectal malignant tumors, following the principles of TME and tumor radical treatment, the adoption of laparoscopic surgery and improvement of technology can greatly improve the resection rate and anus preservation rate of tumors, and the postoperative recovery is fast and adjuvant treatment can be given as early as possible. 5.Minimally invasive lumpectomy for thyroid swelling: thyroid surgery, which can be done through a small hole in the areola or armpit, can complete the neck surgery to achieve the cosmetic effect of no incision and no scar in the neck. At the same time, the video acquisition system can magnify the image several times and display it clearly on the TV screen, through which the doctor can observe the anatomical structure around the thyroid gland and clearly identify the surrounding neurovascular, fine anatomy thus avoiding side injuries to the greatest extent. 6.Laparoscopic hernia repair: Extra-abdominal hernia is a common disease and surgery is the only way to cure it. It includes classical tension-free hernia repair and laparoscopic minimally invasive surgery. With the development of hernia surgery, the updating of the concept and the advancement of technical equipment, laparoscopic minimally invasive surgery has become more and more popular for its advantages such as less trauma, faster recovery and less postoperative pain. The repair of incisional hernia, inguinal hernia, parastomal hernia, and diaphragmatic hernia can be done laparoscopically. Laparoscopic inguinal hernia repair includes TAPP (transabdominal anterior peritoneal hernia repair) and TEP (complete transperitoneal hernia repair), which is especially suitable for bilateral inguinal hernia and recurrent hernia after open surgery, which reflects the advantages of laparoscopy.