In the early stages of gastric cancer, the tumor is confined to the mucosa or submucosa, regardless of whether there is regional lymph node metastasis or not; this is still classified as early-stage gastric cancer. The treatment for early-stage gastric cancer primarily involves curative surgery, which is the first option unless the patient is of advanced age or has severe underlying diseases that prevent tolerance of surgical treatment. Excluding these cases, surgical treatment is generally the first choice. Furthermore, the outcome of surgical treatment for patients with early-stage gastric cancer is generally quite positive, with a five-year survival rate typically exceeding 80%.