Seven-month-old baby cough and runny nose is usually caused by respiratory infections, which can be treated by drinking more water, keeping the environment humid and using medication. 1. Drink more water: seven-month-old babies cough and runny nose can drink more warm water, relieve cough symptoms, accelerate the body’s metabolism, is conducive to the improvement of the disease. 2. Maintain environmental humidity: By maintaining environmental humidity, you can moisten the baby’s respiratory tract, dilute phlegm, facilitate the discharge of phlegm, reduce irritants on the nasal mucosa and other stimuli, relieve the symptoms of cough and runny nose. 3. medication: seven months baby cough runny nose may be due to respiratory tract infections, such as the combination of bacterial infections can be used antibiotic drugs (such as cefixime, etc.), so as to alleviate the symptoms. Seven months baby cough runny nose may also be other reasons, it is recommended that parents once the child found similar symptoms, take the baby to the doctor as soon as possible, improve the relevant examination, for the cause of the treatment. Another tip, if you need to use medication should be used under the guidance of a doctor, to avoid allergies and other side effects brought about by the drugs, do not blindly use drugs.