Chronic appendicitis typically presents clinically as recurring pain and discomfort in the lower right abdomen. Usually, there are no signs of fever with chronic appendicitis. Only when the inflammation of chronic appendicitis is uncontrolled might a low-grade fever occur. Sometimes, when chronic appendicitis undergoes an acute episode and becomes a purulent infection, high fever can occur. In such cases of chronic appendicitis with high fever, complications like appendix perforation, diffuse peritonitis, and septicemia can arise. Therefore, if fever occurs in chronic appendicitis, timely anti-infection treatment should be administered. If the infection is not well-controlled, timely surgical treatment is recommended.