The most common symptoms of early gastric cancer are upper abdominal discomfort, such as mild stomach pain, swelling and heaviness, and sometimes vague pain in the heart fossa, which are often diagnosed and treated as gastritis or ulcer disease at first, and the symptoms may be temporarily relieved. Early symptoms of gastric cancer mainly include the following: 1. Unexplained wasting, weakness, and mental depression are also a group of common but unspecific signals of gastric cancer, and they are progressively getting worse. Some of them are secondary to indigestion symptoms, and patients automatically restrict their daily diet due to bloating and belching after eating, resulting in weight loss and wasting and weakness. In addition, nausea and vomiting can further lose nutrition and cause malnutrition, which will aggravate the symptoms of wasting and weakness. Of course, the wasting and weakness will be more obvious in the late stage of progressive gastric cancer. 2.Sense of fullness in upper abdomen, which is more obvious when eating, and usually the feeling of fullness can be felt after eating a small amount of food, and the patient no longer wants to eat more, and it is often accompanied by warmth and nausea. What are the early symptoms of gastric cancer? Since the location is mostly under or to the right of the glabella, it is sometimes misdiagnosed as gallbladder disease, which is also an early symptom of gastric cancer. 3.Hollow pain in the heart fossa, which is not serious and tolerable, not related to eating and easily manifested when resting quietly, is also an early symptom of stomach cancer. 4.Anorexia, especially anorexia of meat, especially fatty meat. About 50% of the patients have the phenomenon that they love to eat fatty meat but now they suddenly hate it. Due to less food and anorexia, patients can lose weight quickly in a short period of time. 5.Both early gastric cancer and progressive gastric cancer can show upper gastrointestinal bleeding, which is often black stool. Few early gastric cancers may show mild upper gastrointestinal bleeding symptoms, i.e. black stool or continuous positive occult blood in stool. It is mostly seen in polyp-like and ulcer-like early gastric cancer, which is caused by the surface erosion of the lesion or the invasion of capillaries by the cancer, resulting in a small amount of bleeding for a long time, and also in the subtypes of early gastric cancer with flat lesions. It is not easily controlled by drug therapy. Elderly people who do not have stomach diseases should be more alert to the possibility of stomach cancer once they have black stool. If the stool is tarry and the fecal occult blood test is persistently positive, especially when the stool is not easily controlled by general diet or medication, it is one of the most important symptoms of early gastric cancer. Therefore, those who have such symptoms should go to a hospital in time for gastroscopy and upper gastrointestinal barium meal X-ray to make a clear diagnosis.