2-month-old infants do not have a fever, not runny nose only cough can be seen in physiological phenomena, pathological conditions (such as respiratory tract infection), treatment needs to be based on the cause of the decision, such as respiratory infections need to be based on the infectious agent targeted use of antibiotic drugs. 1. Physiological phenomenon: coughing is the body’s normal protective mechanism, which is beneficial to the discharge of respiratory secretions, such as coughing symptoms in the morning, coughing is generally light, no other abnormal symptoms, and no progressive aggravation, usually considered normal, no oral medication, close observation can be. 2. Pathology: Respiratory tract infections can occur as described above, if caused by viruses, generally can be self-cured, without special medication. If it is combined with bacterial infection, antibacterial drugs such as cefixime and amoxicillin should be used as prescribed by the doctor. The above drugs should be used under the guidance of a physician, and it is recommended to consult a specialist for treatment.