Leukemia is a malignant neoplastic disease caused by malignant clonal proliferation of leukocytes. Leukemia itself does not cause hair loss in patients, but later because of treatment with chemotherapy drugs, which can destroy cell metabolism, it may cause normal metabolism of hair follicle cells, resulting in hair loss. Hair loss in leukemia patients usually occurs in 1-2 weeks of chemotherapy and peaks within 2 months. If chemotherapy is stopped, hair will slowly grow back. Effective application of ice caps during chemotherapy can potentially reduce hair loss, and some aesthetic women can use wig sets during chemotherapy to improve their appearance, so patients should not be too nervous about losing their hair. In addition, nausea, vomiting, fever, anemia and other symptoms may occur after chemotherapy, which are more serious adverse reactions. If the symptoms seriously affect the patient’s daily life, you can take dexamethasone, antiemetic tablets and other drugs to relieve nausea and vomiting under the guidance of the doctor, and you can supplement fiber foods such as apples and celery in daily life to prevent constipation, and try to supplement various nutrients such as meat, eggs and milk, etc. Good nutritional supplementation is the basis for successful completion of chemotherapy.