Some tumors require 6 courses of chemotherapy, and 6 courses of chemotherapy is the result of many clinical trials. After a large number of clinical trials, it has been proved that 6 courses of chemotherapy have the best effect, the side effects of chemotherapy can be tolerated, and it is also very good for controlling the tumor and prolonging the patient’s life. If not enough than 6 courses of chemotherapy, the best therapeutic effect is often not achieved; however, if more than 6 courses of chemotherapy, it will not increase the survival time of the patient, and the corresponding side effects are definitely more than those of 6 courses of chemotherapy. Therefore, according to the clinical standard of treatment, some types of tumors need 6 courses of chemotherapy, and after 6 courses of chemotherapy, regular review is also needed.