Minimally invasive medical technology is a clinical technology that applies contemporary advanced electronic, thermal, optical and other equipment and techniques to achieve the most perfect diagnosis and treatment of diseases through the smallest damage to the human body. Minimally invasive technology is a major advancement of medical science in the 21st century. Minimally invasive dental treatment technology is an important part of minimally invasive medical technology. Tooth extraction is a routine treatment in dentistry, and most patients have fear of tooth extraction, mainly because they are worried that the procedure will cause different degrees of pain and various discomfort symptoms. Traditional extraction uses dental jaws and chisels for gap augmentation extraction operations, and inevitably uses hammering to augment the gap, which is prone to cause patient discomfort. Traditional dental jaws are used to extract teeth by lever force, axle force and wedge force, and mainly uses lever force. The use of lever force often causes gingival tearing and alveolar bone fracture, especially the extraction of obstructed teeth (mainly wisdom teeth) using hammering to split the crown, which may also cause jaw bone fracture and temporomandibular joint injury. The emergence of impacted pneumatic surgical handpiece and surgical needle has greatly facilitated the operation of oral surgery and opened a new era of minimally invasive extraction method. The concept of minimally invasive extraction: that is, minimally invasive extraction equipment such as minimally invasive dental jaws, fitting extraction forceps, ultrasonic bone knife, 45-degree contra-angle turbine handpiece, elongated blocking tooth turning needle and periodontal membrane separator are used to cut the crown and sever the periodontal membrane, and the dental jaws are mainly based on axial force and wedge force in the way of applying force, and no lever force is used to avoid the corresponding adverse reaction. The minimally invasive extraction knife was invented and designed by professional dentists in order to make the dental procedure as harmless as possible. The thin and sharp working end allows it to compress the alveolar bone, cut the periodontium and gently extract the tooth. Minimally invasive extractions have been successfully performed in our department and used for immediate implant restorations. Minimally invasive extractions have the following advantages over traditional extractions: 1. Chisels and hammers are not used as much as possible during the extraction procedure to reduce the patient’s fear. 2. 2. The instruments used in the surgery are all fine instruments, with accurate operation and stable pivot points, which can minimize the patient’s injury. 3. The complications of tooth extraction during and after the surgery were significantly reduced. 4. The chance of wound infection of patients after surgery is greatly reduced, the postoperative pain is lighter and the wounds heal faster