Chemotherapy is a very common anti-tumor treatment, mainly divided into systemic intravenous chemotherapy, local interventional chemotherapy, oral chemotherapy and so on. Generally, chemotherapy drugs are reimbursed by medical insurance. Nowadays, there are more domestic chemotherapy drugs used in chemotherapy, if you need to choose some imported chemotherapy drugs, they may not be included in medical insurance. It depends on the local medical insurance drug catalog, and there may be some differences in each local situation. Chemotherapy is divided into post-operative adjuvant chemotherapy, which may take 4-6 courses, and pre-operative neoadjuvant chemotherapy, which may take 4-8 courses, in order to shrink the tumor and reduce the stage, so that some inoperable malignant tumors can become operable malignant tumors. There are also some advanced inoperable ones that can be considered for palliative chemotherapy. The drug regimen and treatment time may be different for different types of chemotherapy.