Fasting back pain may be caused by duodenal ulcer, cholecystitis and other diseases, the patient should consult a doctor in a timely manner to clarify the cause of the disease and then carry out appropriate treatment. 1. Duodenal ulcer: excessive secretion of gastric juice or duodenal mucosal defense dysfunction leads to duodenal mucosa corrosion by gastric acid to form a local inflammatory damage, the patient will have fasting back pain, acid reflux, belching (hiccups), loss of appetite, etc., you can use omeprazole, famotidine and other drugs for treatment. 2. Cholecystitis: if the patient’s fasting back pain occurs in the right posterior side, it should be considered to be caused by gallbladder stones and other factors leading to cholecystitis, such patients should pay attention to dietary patterns, do not eat spicy stimulation, greasy food, if necessary, medication or surgical treatment. The above drugs should be under the guidance of a doctor. Patients with related diseases are advised to seek timely medical treatment and targeted treatment.