Most of the chemotherapy for gastric cancer needs 6~8 courses, and the treatment program and duration are different for different stages. Gastric cancer is a relatively common malignant tumor in clinic, and surgery and chemotherapy are important treatment means for this disease. Adjuvant chemotherapy for most post-surgical patients is often 6~8 courses, which can reduce the probability of recurrence and metastasis. However, if the patient is in advanced stage, as it is not possible to achieve a radical cure, chemotherapy is mainly used to control the patient’s disease progression as much as possible, and needs to be used until the patient cannot tolerate chemotherapy. At this time, according to the patient’s situation, you can also choose other means of treatment, such as targeted drugs or immune drugs. It is recommended that patients follow the doctor’s instructions strictly and maintain a good attitude in order to obtain a better prognosis.