Pneumonia infection during leukemia treatment, first of all, should be clear whether the causative agent is bacterial, viral, or fungal, and then targeted anti-infective drugs should be given to control the infection. 1. Bacterial infection: during the treatment of leukemia patients, due to bone marrow suppression, there may be a lack of granulocytes, which is easy to combine with lung infection. At this time, penicillin and imipenem should be given to control pneumonia as soon as possible and relieve symptoms. 2. Viral infection: during the treatment of leukemia, due to the lowering of body resistance, viruses can easily attack the body and cause lung infection. At this time, active antiviral treatment should be given, ribavirin, oseltamivir and so on, in order to control the lung infection as soon as possible. At the same time, supportive therapy should be strengthened and the primary disease should be treated actively. 3. Fungal infection: If the infection of pneumonia during leukemia treatment is confirmed to be caused by fungal infection, itraconazole, fluconazole, amphotericin B and so on can be given to control the infection. If the diagnosis of pneumonia during leukemia treatment is confirmed, it is recommended to carry out standardized treatment as soon as possible to reduce the adverse effects of the disease. All of the above medications should be used under the guidance of a doctor, avoid self-medication.