To analyze the clinical effect of frontal muscle suspension for children with congenital ptosis. Methods A total of 86 children with congenital ptosis admitted to Children's Hospital of Soochow University from January 2017 to December 2022 were selected as the research objects. According to the degree of ptosis, they were divided into control group (moderate) and observation group (severe), with 43 children in each group. The control group was treated with levator palpebrae superioris muscle shortening, and the observation group was treated with frontal muscle flap suspension. The clinical correction effect, eyelid recovery and complications were compared between the two groups. Results The effective rate of correction in the observation group was 97.67%, which was higher than 86.05% in the control group, and the difference was statistically significant (P <0.05). The eyelid recovery of the two groups at 1, 3 and 6 months after operation was better than that before operation, and that in the observation group was better than that in the control group, the difference was statistically significant (P <0.05). The incidence of complications in the observation group was 18.60%, which was lower than 39.53% in the control group, and the difference was statistically significant (P <0.05). Conclusion The implementation of frontal muscle suspension in children with congenital ptosis can improve the appearance of children, improve the eyelid condition and the treatment effect, reduce the incidence of complications, and have high effectiveness and safety.