Chronic reentry can be treated by general supportive therapy, medication and surgery to boost white blood cells. 1. General supportive treatment: including preventing infection and correcting anemia. Intravenous blood transfusion can be used to boost white blood cells. 2. Drug therapy: hematopoietic growth factors such as recombinant human granulocyte colony-stimulating factor can be used for subcutaneous injection; immunosuppressants such as cyclosporine can be used for the pathogenesis of the disease, and attention should be paid to the detection of blood concentration, liver and kidney function; androgens and other hormones can promote hematopoietic function to enhance leukocytes. 3. Surgical treatment: for people under 40 years old, without infection and complications, surgical treatment such as hematopoietic stem cell transplantation can be carried out to treat the disease fundamentally and enhance the white blood cells. There may be other ways to enhance white blood cells in chronic reocclusion, and it is recommended that standardized treatment be carried out under the guidance of a doctor. The above drugs should be used reasonably under the guidance of a doctor, avoid self-medication.