Baby sneezing is common for the following reasons: 1. normal phenomenon, baby is too small, nasal cavity is relatively short, capillary distribution is too dense, nasal mucosa is sensitive, any little stimulation will cause baby sneezing. 2. dust, fragrance stimulation, if baby stay in an environment with more dust or fragrance, flower fragrance is thicker, baby will sneeze because of dust and fragrance stimulation. 3. have boogers, if baby nasal cavity has If your baby has nasal discharge, it will stimulate the nasal nerve to produce an itchy sensation, which will lead to sneezing. 4. cold, sneezing is one of the symptoms of a baby’s cold, besides sneezing, it will also be accompanied by runny nose, nasal congestion, fever, no appetite, etc. 5. allergic rhinitis, if your baby comes into contact with pollen, animal fur and other things that can cause allergies, it will sneeze.