Patients with leukemia combined with pneumonia are not obliged to take immunoglobulin, whether it is suitable for immunoglobulin should be combined with their own situation. Immunoglobulin is mainly applied to primary humoral immunodeficiency, multifocal motor neuropathy, chronic lymphocytic leukemia, immune thrombocytopenia, Kawasaki disease, chronic inflammatory demyelinating polyneuropathy and so on. Therefore, if you have chronic lymphocytic leukemia accompanied by pneumonia, you can consider immunoglobulin for treatment. At the same time, immunoglobulin has some side effects, such as can cause blood clots, renal insufficiency, acute renal failure, osmotic nephropathy, pain, nausea, fever, sweating, tachycardia, allergies and so on. Therefore, it is important to weigh the pros and cons in the context of your own situation before use. Severe hepatic and renal insufficiency and patients allergic to the product are prohibited. Patients with leukemia combined with pneumonia, before injecting immunoglobulin, should carefully consult the doctor, under the guidance of the doctor, combined with their own conditions, choose the appropriate treatment plan, not necessarily injecting immunoglobulin.