Gastric pain with back and waist pain may be caused by gastric ulcer, pancreatitis, gastric cancer and so on. 1. Gastric ulcer: it refers to ulcers that occur in the mucous membrane or deeper layers of the inner wall of the stomach, which often result in excessive secretion of gastric acid. When gastric acid is secreted excessively, it can easily lead to spasm of the smooth muscle of the stomach, which can cause gastric pain, and sometimes it will radiate to the back of the waist, causing pain. 2. Pancreatitis: the occurrence of the disease and the intake of too much, high-fat food and excessive alcohol consumption have a great relationship, the attack will often cause severe pain in the upper abdomen, and may be radiated to the back of the shoulders, waist, resulting in back pain. 3. Stomach cancer: it is a kind of malignant tumor in the stomach, the pain is not obvious in the early stage, but with the gradual increase and spread of the tumor, it will lead to pain in the stomach, and because the cancer cells invade the nearby mucous membranes, it is also easy to cause radioactive pain in the lower back. Stomach pain, along with back and waist pain, is often a serious condition, and should be timely to the hospital, after clarifying the cause of the disease, targeted treatment.