Objective: To analyze the risk factors of hospitalized children with acute attack of bronchial asthma in a hospital from 2016 to 2018. Methods: The clinical data of children with acute attack of bronchial asthma in a hospital from 2016 to 2018 were retrospectively analyzed. Risk factors of children with acute attack of bronchial asthma were statistically analyzed. Results: Children from 0 to 3 years old had the highest proportion of acute attack of bronchial asthma at 51.2%. Children with acute attack of bronchial asthma accounted for 20.0%

22.4%

43.8% and 13.8% in spring

summer

autumn and winter respectively. With the increase in age

the proportion of boys and combined respiratory tract infection in children with acute attack of bronchial asthma decreased

while the proportion of combined allergic history or rhinitis and irregular drug use for previously diagnosed asthma increased

with statistically significant differences (P<0.05). In children <6 years old

there were statistically significant differences in the combined allergic history and detection rate of respiratory syncytial virus (RSV) and Moraxella catarrhala in different severity of acute attack of bronchial asthma (P<0.01). In children >6 years old

there was statistically significant differences between the severity of acute attack of bronchial asthma and the irregular drug use after previous asthma diagnosis (P<0.05). Conclusion: Children from 0 to 3 years old are more likely to be hospitalized for acute attack of bronchial asthma than other age groups. Autumn is the peak period of hospitalization due to acute attack of bronchial asthma. Risk factors for acute attack of bronchial asthma in children vary by age. The severity of acute attack of bronchial asthma also varies in its risk factors across different age groups