Periodontitis gum swelling can be extracted. Generally, periodontitis refers to chronic periodontitis in the oral cavity, the typical performance of which is gum recession and alveolar bone resorption, which eventually leads to loosening and loss of teeth. However, for chronic periodontitis, the principle is to try to keep the teeth, if the teeth are loose within 2mm, try to keep the teeth from falling out through periodontal treatment. However, if the periodontitis reaches an advanced stage and the tooth loosening is obvious it is necessary to extract the tooth, then the tooth can be extracted for treatment and the tooth will be better extracted. Another special clinical situation is the acute stage of pericoronitis, which is the formation of more severe swelling and pain in the pericoronary area due to poor eruption of the wisdom tooth, and extraction is not recommended during this period. This is because extraction may cause infection in the surrounding space, which may further cause bacteremia, sepsis, etc.