Leukemia nosebleeds are the bleeding symptoms of leukemia. Leukemia is a malignant disease of the blood system. As leukemia cells destroy the normal hematopoietic function of the bone marrow, the number of platelets in the patient’s peripheral blood decreases, and leukemia cells also have a destructive effect on the blood vessels throughout the body. Patients with leukemia are prone to bleeding, and nasal bleeding is a very common symptom. If platelet transfusions are given to leukemia patients, the platelet count will increase and the nosebleed symptoms will gradually be relieved. If chemotherapy or bone marrow transplantation is given, the condition remits, the platelet count returns to normal, and the symptoms of nosebleeds will disappear. In addition to nasal bleeding, leukemia patients are also prone to bleeding spots and petechiae on the skin mucosa, blood blisters in the mouth, and in severe cases, internal bleeding such as blood in the urine and vomiting, and in the most serious cases such as brain bleeding, which often leads to the death of the patient.