The main oral drugs currently used for chemotherapy of bowel cancer are two drugs, one is capecitabine tablets, which is the most classic and the most widely used oral chemotherapy drug in clinical practice, and is the oral form of 5-fluorouracil, which can be used alone for adjuvant chemotherapy after bowel cancer surgery. Especially for stage II general risk rectal cancer, that is, postoperative bowel cancer patients whose risk factors belong to T3N0M0. In the case of high-risk patients or stage III bowel cancer, combination chemotherapy is needed, that is, a combination of capecitabine and intravenous oxaliplatin chemotherapy regimen is needed. Additional oral chemotherapy drugs include oral tegeo, which is also a combination of 5-fluorouracil, both of which are currently used in clinical practice for postoperative adjuvant chemotherapy for bowel cancer.