The chronic appendix lacks typical clinical manifestations and can cause pain and pressure in the right lower abdomen for many reasons. The following points should be noted in the diagnosis of chronic appendicitis: 1. A history of typical acute appendicitis The previous acute appendicitis lesions are more severe in those with recurrent episodes. The history should include a typical history of acute appendicitis attacks, such as a history of appendicitis abscesses or inflammatory masses, the diagnostic value is greater. 2, there are repeated episodes of right lower abdominal pain and pressure pain Appendiceal wall thickening, lumen narrowing, obstructed emptying easy to induce acute infection or residual infection, often causing right lower abdominal pain and pressure pain. The site of abdominal pain and light pressure pain caused by chronic appendicitis should be the same as in previous acute appendicitis, differing only in degree. This is a very important test. Especially in the absence of a typical attack history, barium meal examination can not only clarify the pressure point at the appendix, but also exclude other lesions. The X-ray signs of chronic appendicitis are interruption, distortion, delayed emptying, and difficulty in pushing the appendix due to adhesions. If the appendiceal cavity is completely occluded, the appendix is not visualized and the relationship between the pressure point and the appendix can be determined by the location of the ileocecal apparatus. The diagnosis of chronic appendicitis is not easy and must be based on the exclusion of all diseases that can cause pain and pressure in the right lower abdomen. Therefore, the diagnosis of chronic appendicitis should be made with caution. The main clinical manifestation is an unremarkable or irregular vague pain in the right lower abdomen, with occasional other gastrointestinal symptoms such as increased frequency of bowel movements or abdominal fullness. Mild pressure pain in the right lower abdomen is the main sign.