Objective:To explore the effect of preventive nursing intervention on symptom improvement, medication compliance and nursing satisfaction of children with bronchial asthma.Methods:Sixty-six children with bronchial asthma treated in hospital were selected as the research object, and were randomly divided into observation group (33 cases) and control group (33 cases).The control group was given routine nursing intervention, while the observation group was given preventive nursing intervention on the basis of routine nursing.The medication compliance and nursing satisfaction of the two groups were compared, and the asthma control of the two groups was compared by using the Children Asthma Control Test Questionnaire (C-ACT).Results:After nursing intervention, the good rate of medication compliance and nursing satisfaction in the observation group were better than those in the control group (P>0.05). The scores of C-ACT in the control group and the observation group were better than those before nursing intervention (P<0.01).After nursing intervention, the C-ACT score of the observation group was better than that of the control group (P<0.01). Conclusion:Preventive nursing intervention for children with bronchial asthma can improve nursing satisfaction and medication compliance, and effectively improve children's asthma symptoms.