7 months baby running watery nose to identify the causes, such as colds, rhinitis, etc., can be hot compresses, saline nasal cleaning and other daily care, or follow the doctor’s instructions to give medication. 1. common cold: baby runny nose most cases are viral infections caused by the common cold, generally can be self-healing, without special medication. The runny nose itself is the body in the discharge of the body of germs, daily through hot compresses, saline cleaning nasal cavity can be. If combined with bacterial infection, the nasal mucus will become yellow pus nasal mucus. 2. Allergic rhinitis: if the baby in addition to the clear nasal discharge also appear tears, sneezing, may be allergic rhinitis, generally away from allergens after the symptoms can be improved. If the allergy is serious, you can use anti-allergy drugs to target treatment. 7-month-old baby running watery nose may also have other reasons, it is recommended to go to the hospital in a timely manner, under the guidance of the physician to use medication, avoid taking medication on their own.