Lymphatic metastasis in the greater curvature or lesser curvature of the stomach generally does not exist which one is more serious, and both of them are indicative of poor prognosis. Detection of lymphatic metastasis in the greater curvature or lesser curvature of the stomach after radical gastric cancer surgery is a sign of poor prognosis, which requires simultaneous postoperative radiotherapy. The site of lymph node metastasis can guide the formulation of postoperative radiotherapy, including prophylactic irradiation of lymph node metastasis and intraperitoneal hyperthermic perfusion chemotherapy for lymph node metastasis. Early gastric cancer confined to mucosa or submucosa usually has a better prognosis regardless of whether there are lymph node metastases or not. Patients with lymph node metastasis should actively cooperate with physicians and choose suitable treatment plan to avoid disease progression and delay of treatment. Regular review is also needed after treatment