Stomach without pain is usually not stomach cancer. In clinical practice, patients with gastric cancer usually have no obvious clinical symptoms in the early stage, and a few patients will have nausea and vomiting, but the symptoms are relatively mild. Some patients with progressive gastric cancer will experience pain and weight loss, which are also the most common clinical symptoms of progressive gastric cancer, and some patients will have the feeling of fullness after eating, and some patients will experience upper abdominal pain. In addition, some patients will also experience loss of appetite, emaciation and weakness. If the patient has advanced gastric cancer, he or she will also experience enlarged supraclavicular lymph nodes, ascites, jaundice and abdominal masses, etc. When the patient has advanced gastric cancer, he or she will often experience cachexia such as anemia, emaciation and malnutrition. Some patients may have symptoms of gastrointestinal bleeding such as vomiting blood and black stool after the destruction of blood vessels by gastric cancer.