Appendicitis is categorized into acute appendicitis and chronic appendicitis, and there is a difference between the symptoms of the two. 1. Acute appendicitis: the onset of the disease is often more acute, metastatic right lower abdominal pain, the pain is initially located in the epigastric region, gradually shifted to the umbilical region, and finally the pain is transferred to the right lower abdomen. It may be accompanied by nausea, vomiting, anorexia and other gastrointestinal symptoms, and in severe cases, there may be fever, malaise and other systemic manifestations, which may lead to appendiceal perforation or chronic appendicitis if not treated in time. 2. Chronic appendicitis: often manifested as persistent or intermittent pain in the right lower abdomen, sometimes in the right lower abdomen to feel the swelling, usually does not appear fever, fatigue and other systemic symptoms. Chronic appendicitis can also be induced by strenuous activities or improper diet, acute appendicitis symptoms. Patients with the above symptoms should be alerted to the occurrence of appendicitis, and should go to the hospital in a timely manner to get a clear diagnosis and early treatment to prevent further progression of the disease.