Tumor patients and their families often ask, “Doctor, is it better to have chemotherapy or to take drugs?” This is actually a wrong proposition. In fact, chemotherapy is chemotherapy, and its routes of administration include intravenous administration, interventional administration (regional chemotherapy) and oral administration, so chemotherapy may also be “taking medicine”, and “taking medicine” may also be chemotherapy. Therefore, chemotherapy may also be “taking medicine”, and “taking medicine” may also be chemotherapy, i.e. chemotherapy through oral chemotherapy drugs. For example, some elderly gastric cancer patients may only be given single-drug oral chemotherapy after surgery according to the pathological stage of the original treatment institution. If the doctor asks if there is chemotherapy after surgery, he cannot say that there is no chemotherapy, and then taking the medicine is also chemotherapy.