Constant hidden pain in stomach is not necessarily stomach cancer, gastritis, gastric ulcer, functional dyspepsia and other stomach diseases can cause stomach pain. Cramp-like pain in the abdomen accompanied by nausea, vomiting, diarrhea or fever is usually caused by gastroenteritis. It is usually caused by eating unclean food or food that is too cold. Patients should pay attention to hydration to prevent dehydration, if the vomit with blood. Please be sure to seek prompt medical attention. Patients start to have pain in the stomach after eating, or before meals, concentrated in the upper abdomen, persistent and regular is usually caused by peptic ulcer. Peptic ulcer should be medicated under doctor’s guidance and regular medication can usually cure it. Stomach pain caused by stomach cancer is usually more frequent in middle-aged and old-aged people. Many patients will feel bloating and nausea or loss of appetite, decrease of meal quantity and weight loss of patients. This kind of pain cannot be relieved after taking medicine or after eating. It is often accompanied by symptoms such as vomiting, vomiting blood and blood in the stool. If the symptoms persist for more than two weeks, it is necessary to consult a doctor in time to avoid delays. There are many causes of stomach pain that need to be combined with a variety of conditions to confirm the diagnosis. If stomach pain persists, it is important to go to the hospital to find out the cause.