7 months baby runny nose, may or may not be accompanied by nasal congestion, sneezing, coughing, etc., in the weather changes, seasonal changes in the performance of the particularly obvious, common in acute upper respiratory tract infection and allergic rhinitis. 1, runny nose due to respiratory tract infection: can be seen in nasal congestion, runny nose, sneezing, may or may not be accompanied by fever, most have a history of cold. Treatment: Oral cold medicine can be considered, such as anti-inflammatory particles, children’s allergy oral solution, pediatric cold particles, pediatric cold and syrup, etc., choose one of them can be; can be used with the application of antiviral drugs, such as antiviral combinations, etc. (the specific use of medication, need to be combined with the clinic, in order to the views of the doctor shall prevail in the face-to-face consultation). 2, allergic rhinitis due to runny nose: allergic rhinitis, in seasonal changes, weather changes, cold air stimulation, allergic substances stimulation and so on, easy to occur, instant nasal congestion runny nose, sneezing, coughing. Treatment: small-month-old babies need to use anti-allergy drugs under the guidance of a doctor, such as cetirizine drops, cetirizine oral solution, loratadine syrup, etc., you can choose some drugs for rhinitis such as nasobuccal oral solution, etc., and if necessary, under the guidance of a doctor with the use of montelukast sodium granules / or chewable tablets and so on. For 7 months baby runny nose, need to drink more warm water, hot towel compress nose, or massage Yingxiang point, if necessary physiological salt water nasal spray use, or nasal wash to clean up nasal secretions, to ensure that the nasal passages through the fluent, to reduce the obstruction of respiration, affecting the occurrence of feeding and so on.