8 months baby a little cough may be related to bacterial infection, viral infection, mycoplasma infection, etc., the treatment is based on medication, pay attention to the baby’s care. 1. Bacterial infection: babies are susceptible to bacterial and other pathogens that cause cough when they are immune, can can be treated with antibiotics, such as cefixime granules, to control inflammation and relieve symptoms. 2. Viral infections: babies may have cough, fever and other symptoms after viral infections, ordinary viral infections can generally be self-healing, do not need special medication, a week or so chance to get better. If the fever exceeds 38.5 ℃, you can use ibuprofen and other antipyretic drugs. 3. Mycoplasma infection: If mycoplasma infection causes pneumonia and cough, you can use macrolide drugs to treat, such as azithromycin granules, need to pay attention to the side effects of drugs, such as nausea, abdominal pain and other adverse reactions. It is recommended to take the baby to the hospital for examination and treatment under the guidance of the doctor after identifying the cause. All of the above medications should be used under the guidance of a doctor, avoid self-medication.