Bronchopneumonia in one-month-old infants can be treated with medications, oxygen therapy, and cooling. Bronchopneumonia, also known as lobular pneumonia, is the most common pneumonia in children. It is mostly caused by viral or bacterial infections or mixed viral and bacterial infections. 1. Drugs: If a one-month-old baby has bronchopneumonia caused by a viral infection, antiviral drugs such as ribavirin can be used. If bronchopneumonia is caused by a bacterial infection, antibiotics such as erythromycin and cefixime can be used to treat the illness. 2. Cooling: If the infant has fever, it is recommended to take physical cooling, such as warm towels on the forehead. 3. Oxygen therapy: If the infant has hypoxia, such as irritability and cyanosis, oxygen therapy can be used to relieve the infant’s symptoms. One-month-old infants with bronchopneumonia can also be cared for and treated by replenishing fluids in a timely manner, strengthening nutrition, and changing body position frequently. It should be noted that the above drugs should be used under the guidance of a doctor, avoid unauthorized use of drugs, so as not to cause adverse effects.