After chemotherapy for ascending colon cancer, it usually takes 3 to 5 days to return to normal, the actual time varies with individual’s physique. Chemotherapy is a routine postoperative adjuvant treatment for colon cancer, which can effectively kill cancer cells. Common adverse reactions after chemotherapy include nausea, vomiting, poor appetite, dizziness and fatigue. Since the chemotherapeutic drugs used nowadays are usually low-toxicity and high-efficiency drugs, especially the accumulation of toxicity in the pre-chemotherapy period is less, so the recovery time of patients is shorter, usually 3 to 5 days. In addition, chemotherapeutic drugs have obvious cumulative effects, with the increase in the number of chemotherapy, the chemotherapy reaction will be aggravated, and the recovery time will be relatively longer. After chemotherapy, patients need to go to the hospital regularly for checkups, such as blood routine and liver function. If there is obvious nausea and vomiting, please go to the hospital in time to avoid delaying the condition.