The change of baby’s nasal discharge from clear to yellow is not a sign of improvement, but in most cases a combination of rhinitis. Because children are relatively young and the eustachian tube is straight, rhinitis and otitis media can easily appear after a cold. If the child has less yellow nose, it should not be a big problem and may get better by itself. However, oral medication should be given to the child for treatment, especially if the child’s yellow nasal discharge is particularly high, and oral orthodontic medication, such as orthodontic rhinitis granules or chamomile granules, should be given. In addition, nasal flushing is needed to clear the secretions in the nasal cavity. If the yellow nasal discharge is particularly yellow, bacterial infection should be considered and anti-inflammatory drugs should be added to control the infection. After the above treatment, the child’s symptoms are not particularly relieved, or even cough, or headache, poor mental state, need to consider whether there is sinusitis, need to go to the hospital for further examination, for sinusitis children need to consider infusion treatment. In addition, nasal rinsing also needs to be carried out regularly.