Rebound pain in the lower abdomen is most often seen when intra-abdominal organ lesions involve the adjacent peritoneum and also in primary peritonitis. Rebound pain is a sign of inflammatory involvement of the peritoneal wall and is most often seen in cases of intra-abdominal organ disease involving the adjacent peritoneum and primary peritonitis. So, how should a patient with lower abdominal rebound pain diagnose whether chronic chronic appendicitis? The following is a brief introduction: 1, abdominal pain right lower abdominal pain, which is characterized by intermittent hidden pain or distension, sometimes heavy, sometimes light, the location is relatively fixed. Most patients are induced abdominal pain after a full meal, exercise, exertion, cold and prolonged standing. 2, gastrointestinal reactions patients often have varying degrees of indigestion, decreased appetite. Longer duration of the disease may appear wasting, weight loss. Generally no nausea and vomiting, and no abdominal distension, but older patients can be accompanied by constipation. 3, abdominal pressure pain pressure pain is the only sign, mainly located in the right lower abdomen, generally small in scope, constant location, heavy pressure to appear. There is no muscle tension and rebound pain, and there is usually no abdominal mass. 4.Signs of various specific pressure points such as McDonald’s point, Lang’s point and lumbar major muscle sign and Roche’s sign are positive.