Small chemotherapy generally refers to some single-agent oral chemotherapy or chemotherapy with small doses of drugs or side effects. However, this is only a statement among patients, chemotherapy according to the size of the division does not have the rationality. With the development of medicine, various chemotherapy programs and chemotherapy modalities appear in the clinic. According to the different purposes of chemotherapy treatment, chemotherapy is divided into adjuvant chemotherapy and chemotherapy treatment. 1. Adjuvant chemotherapy: preoperative or postoperative adjuvant chemotherapy can effectively improve the prognosis. 2. Chemotherapy treatment: it is applicable to malignant tumors that cannot be treated by surgery, and the treatment plan is different according to the condition, and the patient’s physique and health condition also have influence on the side effects of chemotherapy, and patients with poor physique are weak in tolerance ability. If the patient is not feeling well, it is recommended to go to oncology department for consultation.