The diagnostic methods for chronic appendicitis mainly include medical history, clinical symptoms, physical examination, laboratory tests, and auxiliary examinations. Firstly, cases of chronic appendicitis generally have a history of acute appendicitis episodes. Clinically, it is mainly characterized by pain, discomfort, and dull pain in the lower right abdomen, often without a history of migratory lower right abdominal pain. In physical examinations, tenderness can be found in the lower right abdomen, and when chronic appendicitis flares up acutely, signs of peritonitis can manifest as rebound pain in the lower right abdomen. In laboratory tests, an increased white blood cell count can be observed. Auxiliary examinations may reveal thickening of the appendix wall and obstruction in the appendix lumen due to fecaliths. Therefore, chronic appendicitis can be diagnosed through methods such as medical history, clinical symptoms, physical examination, laboratory tests, and auxiliary examinations.