The use of nebulized medication in babies may cause high white blood cells, such as incorrect use of nebulizing mask, improper posture, failure to wash the mouth and face in time. In general, nebulization will not directly cause leukocyte elevation, but in the inhalation of nebulized drugs may be due to incorrect use of nebulizer mask, improper posture, etc. in the face or nasal cavity, oral cavity and unclean residues of drugs and substances, which may result in local bacterial flora disorders, the emergence of leukocyte elevation and other infectious conditions. Therefore, it is recommended to use nebulization therapy under the guidance of a doctor according to the condition, and after nebulization, the baby’s face should be cleaned as much as possible, and appropriate rinsing and cleaning of the nasal cavity.