The time of recurrence of metastasis after gastric cancer surgery is closely related to the pathology and disease stage of patients. According to clinical observation, patients with advanced disease, such as stage III and IV gastric cancer, are prone to recurrence 1-2 years after surgery. The chance of recurrence gradually decreases with time. If there is no tumor recurrence after five years, it can be defined as a cure and the cancer rate is no different from normal people, which is about 3‰. If cancer patients do not undergo treatment, they are bound to metastasize and have a great chance of recurrence. The recurrence and metastasis after treatment should be followed up and reviewed to achieve early diagnosis and early treatment to reduce the possibility of recurrence and metastasis.