Bronchiolitis in newborns is mainly due to bronchial inflammation caused by pathogens including bacteria, viruses, mycoplasma, chlamydia and other infections. The main clinical symptoms are fever, cough, shortness of breath, dyspnea and other symptoms. The treatment is usually anti-infective and symptomatic. Bacterial infections usually have an acute onset, persistent high fever and cough, and can usually be treated with broad-spectrum antibiotics such as penicillin. Viral infections usually have mild symptoms, most of which include nasal congestion, runny nose, fever, cough, etc. They are generally more common during viral epidemics, and imaging tests are often incompatible with symptoms. In addition, mycoplasma sexually transmitted infections show no symptoms in the early stage, and then appear coughing obviously, etc., positive test for Mycoplasma pneumoniae, in general, can be treated by macrolide drugs to control treatment, drugs such as erythromycin. In short, neonatal bronchitis has a variety of pathogens and is generally treated with anti-infection against the germs. It is recommended to visit the hospital for relevant examinations and treatment to clarify the cause and treat it symptomatically to prevent complications with other systemic diseases. (For specific medications, please refer to the doctor’s instructions in the clinical setting)