How long it takes for a patient to return to normal after chemotherapy should be based on the patient’s physical state as well as the specific adverse reactions, and should be analyzed specifically. The nausea and vomiting reaction after chemotherapy is generally for people with good nutritional status and who are not sensitive to their own vomiting reflexes, and they will gradually recover within 3-5 days after chemotherapy. Some people with sensitive gag reflexes (e.g., young women, those with severe vomiting symptoms from previous pregnancies, etc.) will recover more from chemotherapy-induced nausea and vomiting. It is also related to the chemotherapy drugs, some of which are more likely to cause vomiting, such as cisplatin and adriamycin. Myelosuppression after chemotherapy, generally in the chemotherapy thick 10-14 days peak, this time need to pay attention to review the blood, timely treatment of chemotherapy-induced decline in white blood cells, red blood cells, platelets and other myelosuppressive reactions. In addition, some patients with neurotoxic symptoms such as numbness of hands and feet after chemotherapy, usually three months or more after chemotherapy to recover. In short, how long it takes to return to normal after chemotherapy depends on what kind of adverse reactions the patient is experiencing and the drug regimen used for chemotherapy. If the patient’s basic condition is good, with a correct lifestyle, such as maintaining a good state of mind, paying attention to rest, eating more vegetables, fruits and other foods, and increasing exercise appropriately, it will help promote recovery.