Cholecystitis is mainly due to bile duct obstruction, bile stasis caused by secondary infection, according to different types of cholecystitis, the causes are different, the specific circumstances should be examined in the hospital to clarify, targeted treatment treatment. 1. Acute calculous cholecystitis: it is due to obstruction of the gallbladder duct that causes stone damage to compress the local mucous membrane causing inflammatory reaction, and bacterial infection in the case of cholestasis. 2. Acute non-calculous cholecystitis: the etiology of this type of cholecystitis is still unclear, usually develops after severe trauma, burns or abdominal non-biliary surgery, preferably in the elderly or critically ill patients, due to bile ischemia in this group of people, resulting in rapid development of the disease, the risk factor is high. 3. Chronic calculous cholecystitis: Chronic calculous cholecystitis is mainly caused by repeated obstruction of gallbladder ducts due to gallbladder stones, bacterial infections, as well as low-fiber, high-energy diets, medications, rapid weight loss, and other factors that lead to the formation of stones. 4. Chronic non-calculous cholecystitis: Chronic non-calculous cholecystitis is caused by bacterial infections of intestinal origin, impaired emptying of the gallbladder, ischemia of the gallbladder as well as abnormal metabolism of bile acids due to certain reasons. Cholecystitis needs to be analyzed and diagnosed according to the different types of etiology of the causes induced by the specific circumstances should also be examined in the hospital, under the guidance of a professional doctor combined with the personal situation of targeted treatment, to avoid misunderstanding the condition, aggravate the symptoms, resulting in discomfort.