Signs of peritoneal irritation in appendicitis mainly include pressure pain and rebound pain in the abdomen. In the early stage of appendicitis, when the abdominal pain has not shifted to the right lower abdomen, there may be fixed pressure pain and rebound pain in the right lower abdomen. In more serious cases, especially gangrenous and perforated appendicitis, there may be peritonitis in the whole abdomen, with pressure pain and jumping pain, which often indicates that the condition is serious and requires surgery as soon as possible. Of course, a variety of diseases may produce peritoneal irritation signs, so clinically it is often necessary to improve the CT, ultrasound and other tests to clarify the diagnosis, if the diagnosis is acute appendicitis, most of the radical surgery should be performed as soon as possible, because after conservative treatment there is a possibility of recurrence or even the formation of chronic appendicitis.