Appendicitis may be caused by poor living habits, bacterial infection, intestinal obstruction and so on. 1. Poor living habits: when the patient has poor living habits, poor diet, eating cold, unclean food, lack of sleep, mental stress, etc. will lead to intestinal dysfunction, which will lead to appendicitis. 2. Bacterial infection: due to the narrowing of the appendix lumen, mucous membrane damage, etc. will cause bacterial infection, when the patient’s body resistance is poor, it may cause appendicitis. 3. Intestinal obstruction: when the patient’s intestinal contents are blocked from passing through the intestines, the inflammation will lead to localized narrowing of the intestinal canal, which will lead to appendicitis. When the patient suffers from appendicitis, it is recommended to seek medical treatment in time, to be diagnosed by professional doctors and given reasonable treatment to avoid delaying the condition.