Wisdom teeth erupt at the latest (18 – 20 years of age) and are often unable to erupt properly due to limited space in the dental bed position resulting in obstruction. The vast majority of obstructed wisdom teeth are anteriorly inclined, and anteriorly inclined wisdom teeth have a continuous and balanced forward pushing pressure on the teeth in the row, which can cause clinical problems such as crowding (unevenness); in addition, obstructed wisdom teeth can also lead to local inflammation, caries of neighboring teeth, temporomandibular joint disease and many other adverse effects. Therefore, wisdom teeth that are blocked usually need to be removed. Removal of obstructed wisdom teeth in adults is more difficult and has more adverse effects. At the age of 10 – 12 years, modern medical technology can assess whether the wisdom tooth germ has a tendency to become blocked. Early prophylactic extraction of wisdom teeth that have a tendency to block can not only avoid a series of clinical problems caused by wisdom teeth blockage, but also save medical costs and time, and the operation is less difficult and the postoperative adverse effects are less severe. Nowadays, more and more doctors and patients tend to choose the prophylactic extraction of blocked wisdom teeth.