ObjectiveTo investigate the treatment effect of non‐surgical ear molding correction in children with mild cryptotia deformity.Methods51 cases were collected from 2016 to 2021. They were divided into four groups (6 months–1 year group, 1–3 years group, 3–6 years group, and ≥6 years group). The effective rate, recurrence rate, complication rate, and treatment duration of non‐surgical ear molding correction were analyzed among the four groups.Results3 months after the end of corrective treatment, the overall effective rate was 92.2% (47/51), the overall recurrence rate was 7.8% (4/51), and there was statistical significance among the four groups (p = 0.001). The overall complication rate was 2.0% (1/51), and there was no statistical significance among the four groups (p = 1.000). There was statistical significance in the treatment duration among the four groups (p < 0.001), and the mean duration of treatment was positively correlated with the age at treatment (p < 0.001, R = 0.614).ConclusionsWe first propose and recommend that the treatment time window for non‐surgical ear molding correction be maximally extended to 6 years old in children with mild cryptotia deformity. There is a high success rate of non‐surgical ear molding correction in children with mild cryptotia deformity. The complication rate is low. There is a positive correlation between the mean treatment duration and the age at treatment, and the treatment duration increases with the growth of months.Level of Evidence4 Laryngoscope, 133:2122–2128, 2023