Chemotherapy is a common anti-tumor treatment. The chemotherapy regimen is different for different tumors or different stages of tumors, so there are not several chemotherapy regimens, but probably many. If the patient is in poor health condition and cannot tolerate it, there are also single drug chemotherapy regimens. In addition, there are intravenous chemotherapy drugs and oral chemotherapy drugs, and sometimes intravenous chemotherapy is needed together with oral chemotherapy, either intravenous chemotherapy alone or oral chemotherapy alone. Oral chemotherapy may have fewer side effects. For example, oral Tegeo capsules can be used for advanced gastric cancer or intestinal cancer patients.