The stool of stomach cancer patients is usually black and tarry, and patients with stomach cancer will have symptoms such as anemia. When the tumor bleeds easily, the blood discharged from the stool will be black, and in more serious cases, there may be massive bleeding or even blood in the stool. When patients have this condition, they should go to hospital for relevant examination. The success rate of early gastric cancer surgery is relatively high. Early lesions are mainly concentrated in the gastric sinus and can be partially or completely removed from the stomach, which is easier to treat and less prone to recurrence. Patients should pay attention to rest, healthy diet, quit smoking and drinking to protect their stomach during surgery. After the surgery, patients should also go to the hospital for regular review to avoid metastasis of the disease.