When leukocytes are too high, usually over 100,000, a series of clinical manifestations formed by the accumulation of large numbers of primitive cells in the capillaries are collectively called leukocyte stasis syndrome. The most common clinical manifestations are acute respiratory failure, pulmonary edema, and pneumonia-like syndrome. It can also manifest as CNS symptoms, such as headache and stroke-like manifestations. Once the condition appears, it is very critical and should be treated immediately with leukocyte replacement, chemotherapy, and CNS to rapidly reduce leukocytes. It can be life-threatening if not treated in time. The syndrome is mainly seen in AML, ALL and CML, while CML is relatively rare and the cause is unknown. When this condition occurs, you also need to pay attention to your daily habits, don’t eat spicy and acidic food, you need to drink more water and keep good habits. At the same time, do not stay up late at night, exercise properly, but do not exercise too hard, too hard for the body is also a certain damage. Go to the hospital in a timely manner, regularly review the blood routine, and if necessary, review the bone aspiration and other related tests.