Baby runny nose more than 1 month is not good, clinically considered to be mostly caused by rhinitis or sinusitis and other diseases, may be related to the baby cold or cold and other triggering factors. For the treatment of this situation, the clinical analysis is as follows: 1, running watery nose, considering the relationship with rhinitis, you can use physiological sea saline under the guidance of the doctor for nasal spray treatment. If the age of 3 years old and above, can be under the guidance of the doctor with Nesuna for nasal spray treatment, can also relieve nasal congestion, reduce the runny nose. At the same time, you can orally take children’s special treatment of rhinitis of Chinese medicine preparation, symptomatic treatment treatment. 2, the flow of pus yellow snot, most of the considerations and sinusitis triggered with the relationship between the general presence of the nasal cavity, sinus bacterial infection and other factors. You can take oral antibiotics under the guidance of the doctor for treatment, can also apply physiological sea saline nasal spray treatment, in order to play a role in cleaning the nasal cavity; if unilateral pus runny nose, accompanied by odor, to consider the possibility of nasal foreign body. Regardless of the above, it is recommended to consult the otorhinolaryngology department of a regular hospital as soon as possible and take active treatment to avoid delaying the condition.