There are many oral chemotherapeutic drugs, such as capecitabine, tiglio, etoposide and so on. The indications of different drugs are different, including gastric cancer, colorectal cancer, breast cancer and so on. 1. Capecitabine: Capecitabine alone can be used for adjuvant treatment after radical surgery for colon cancer, and it can also be combined with oxaliplatin for metastatic colorectal cancer. Its indications also include metastatic breast cancer and gastric cancer. Contraindications include allergy to drug components, severe hepatic or renal insufficiency and dihydropyrimidine dehydrogenase deficiency. 2. Tegeo: Tegeo is an oral fluorouracil derivative, which can be metabolized into fluorouracil with anti-tumor effect after entering the human body through the mouth, and is approved to be used in non-surgically resectable locally advanced or metastatic gastric cancer in China. Its contraindications include allergy to drug components, severe bone marrow suppression and severe hepatic and renal insufficiency. 3. Etoposide: Etoposide has been developed as oral preparation, and its indications include small-cell lung cancer, lymphoma, leukemia and so on. It is also effective in neuroblastoma and rhabdomyosarcoma. In addition to the above drugs, there are many other kinds of oral chemotherapy drugs with different indications. It is recommended that patients consult professional doctors according to their own conditions in order to determine the suitable oral chemotherapy drugs, and all the drugs should be applied under the guidance of doctors.