Pain in the back when eating, accompanied by difficulty in swallowing and stagnant food, should be alerted to esophageal cancer disease. After the disease, due to the proliferation of cancer cells, esophageal cancer will invade the surrounding organs and cause pain. When the pain is located below the prominence of the sword, and the body is thinning, vomiting blood and black stool, you should be alert to the disease caused by gastric cancer. Some people have pain in the back when eating, when they consume a lot of fatty foods and drink alcohol, they should be alert to the attack of pancreatitis, because the pancreatic organ is a retroperitoneal organ, so the pain will radiate to the back and back shoulder, thus causing pain in the back.