Objective To explore the effect of Internet of Things (IoT) applied to management of asthma in young children. Methods A total of 178 young children with asthma were enrolled in a management program using IoT, including formulating and implementing action plan, developing electronic medical records, conducting follow-ups based on symptom monitoring and effect evaluation, and providing multi-channel health education.Test for Respiratory and Asthma Control in Kids was conducted at enrollment and 4, 8, and 12 weeks of follow-up to evaluate asthma control rate. Side effects of drugs were monitored. Regular follow-up visits before and at 1,2 and 3 months of follow-up, medication compliance before and after the follow-up were compared. Results The rate of asthma control was gradually increased （P＜0.01）. The rate of regular follow-up visits and medication compliance were significantly improved （P＜0.01 for both）. Conclusion Employing IoT for young children with asthma can improve the management effect.