The gastric sinus is not a part of the stomach where gastric cancer occurs. For ulcers, inflammation or atrophic gastritis in the gastric sinus is more serious, you should pay close attention to the changes of the disease and review the gastroscopy regularly. Once the cancer of gastric sinus is formed, radical surgery should be performed, and lymph node dissection should be performed at the same time as radical surgery of gastric cancer. After surgery, according to the type of pathology, further comprehensive treatment such as radiotherapy, chemotherapy or targeted therapy should be performed to further improve the survival and cure rate of gastric cancer after surgery. It is important to monitor all tumor-related factors and imaging performance regularly after surgery to prevent metastasis and recurrence.