This study assessed the impact of teach back educational model plus zinc supplementation on asthma children. Eighty-one asthma children hospitalized in Children's Hospital of Soochow University, Suzhou, China from September 2020 to October 2021 were selected, and randomly allocated to a control group and an observation group. The control group took routine treatment, and routine educational modalities. By contrast, the Teach back mode of health education and zinc supplementation were added to the observation group. The results showed significant improvement in time to clinical symptom relief and immunological levels in both groups. However, asthma knowledge score, medication adherence, and asthma symptom control were significantly higher in observation group one month following discharge than in control group. We conclude that teach-back health education improved caregivers' asthma knowledge, children's medication compliance, and asthma symptom control scores in the short term.