Leukemia can present with symptoms of drowsiness, but patients with leukemia do not present with drowsiness alone, but often also with fever, anemia, lymph nodes, enlarged liver and spleen, sternal pressure, bleeding, and other manifestations, as well as with various infectious diseases. Because leukemia is a malignant tumor, a malignant disease of the hematopoietic tissue, it occurs because there are a large number of leukemic cells in the bone marrow and other hematopoietic tissues, which proliferate without restriction and enter the human blood circulation, but the production of normal blood cells is significantly inhibited, and it is a relatively complex and serious disease. blood routine and other items to clarify whether the patient’s condition is aggravated or there are intracranial lesions or intracranial hemorrhage, etc., so as not to delay treatment with serious consequences. In addition, one should be alert to the range of symptoms caused by central nervous system leukemia.