Appendicitis falls under the domain of general surgery, and its pathological changes can be categorized into several types. The first type is acute simple appendicitis, characterized by mucosal congestion and edema, with patients typically presenting mild symptoms. The second type is acute suppurative appendicitis, also known as cellulitis, where symptoms worsen, and patients may develop fever and experience tenderness and rebound pain in the lower right abdomen. The third type includes acute gangrenous and perforative appendicitis, where the condition further worsens. The appendix wall is necrotic or partially necrotic, and perforation usually occurs at the proximal end of the appendix, potentially leading to the formation of a periappendiceal abscess. If the perforation extends into the abdominal cavity, it can lead to diffuse peritonitis, often requiring emergency surgical exploration. The fourth type involves a periappendiceal abscess, typically progressing slowly. The omentum can move to the lower right side and envelop the appendix, forming adhesions and leading to the formation of an abscess. Most cases are treated conservatively, and traditional Chinese medicine is used adjunctively to promote the absorption of the abscess.