A course of chemotherapy for colon cancer usually requires hospitalization for 3~7 days, and some of them require about 7~10 days, the specific time required varies according to different chemotherapy regimens chosen and the severity of side effects of patients after chemotherapy. 1. Choose oxaliplatin combined with oral capecitabine systemic chemotherapy, side effects of patients with small hospitalization is generally 3 days, side effects of patients generally need about 5 ~ 7 days. 2. If the chemotherapy regimen of oxaliplatin combined with fluorouracil is chosen, hospitalization is usually needed for about 5 days if the side effects are not serious, and prolonged hospitalization is needed if the side effects are more serious. Most of the colon cancer patients will have adverse reactions such as gastrointestinal and bone marrow suppression after chemotherapy, so even if they are discharged from the hospital, it is generally recommended to monitor their conditions with outpatient review and consult the doctor promptly if there is any discomfort.