In poorly differentiated gastric cancer, patients will have obvious epigastric pain, which is aggravated after eating, accompanied by acid reflux, belching, obvious burning sensation in the epigastric region, loss of appetite and weight loss. Because of poor differentiation of low-differentiated gastric cancer, the tumor develops very fast, and may show anemia and pale conjunctiva at early stage, and the patient may also show positive fecal occult blood test, black stools, and even vomiting blood and blood in stools in serious cases. On examination, there is obvious pressure pain in the epigastric region, and the mass can be touched without obvious rebound pain or muscle tension. Hypofractionated gastric cancer is prone to distant lymph node metastasis, and the most common site of metastasis is the left supraclavicular lymph node. If diagnosed at an early stage, surgery should be chosen in time and supplementary intravenous chemotherapy is needed after surgery.