Cancer is a collective name for a large group of diseases. Tummy pain in the late stage of cancer may be due to tumor invasion to the digestive tract and abdominal metastasis, in which case it will cause stomach pain. Another condition is that the patient has digestive dysfunction, such as indigestion or gastroenteritis, which may also cause stomach pain. Cancer is also a very consumptive disease, and failure to keep up with nutrition will cause patients to have decreased resistance, decreased digestive function, and other problems such as constipation or diarrhea, which will lead to stomach pain. Symptomatic treatment can be applied to promote digestion, as well as to protect the intestinal mucosa and gastric mucosa. In addition, it is better to eat a light and easily digestible diet, and not to eat spicy, stimulating and greasy food. Antispasmodic and analgesic drugs can be applied to relieve the symptoms of stomach pain.