Stomach pain and back pain can be caused by gastric ulcer, duodenal ulcer, stomach cancer and other diseases such as cholecystitis and acute pancreatitis. 1. Gastric ulcer:The most common cause of gastric ulcer is Helicobacter pylori infection, and the main symptoms of the patient are stomach pain, loss of appetite, gastric bleeding, etc. If the patient has an ulcer on the posterior wall of the stomach, there will be radiating pain on the back. If the patient has ulcers on the back wall of the stomach, there will be radiating pain in the back, which will lead to the performance of stomach pain and back pain. 2. Duodenal ulcer: usually caused by Helicobacter pylori infection, it usually manifests as hidden pain in abdomen, abdominal distension, nausea, vomiting, etc., which may be accompanied by back pain. 3. Gastric cancer: Gastric cancer is caused by Helicobacter pylori infection, precancerous lesions and other factors, and patients will have epigastric pain, indigestion, weight loss and other symptoms. If stomach cancer patients have tumor metastasis, it will also lead to stomach pain and back pain. 4. Other: patients with acute pancreatitis, acute cholecystitis and other diseases will have pain in the back, which will radiate to the back, and will also have pain in the back of the stomach. There are other causes of stomach pain and back pain, patients should go to the hospital in time and follow the doctor’s instructions when they have symptoms of stomach pain and back pain.