AIM:To study the surgical effects of frontalis suspen-sion with dacron mesh sling for children severe congenital blepharoptosis.METHODS:Frontal muscle suspensions were performed on 55 cases 74 eyes of children severe congenital blepharoptosis with dacron mesh sling.The follow-up periods were 1 month to 24 months (average 6.5 months).The photos were compared before and after the operation.RESULTS:After the operation,the excellently-corrected eyes were 69 (93%);under-corrected eyes were 5 (7%);no over-corrected eyes.CONCLUSION:Frontal muscle suspension using dacron mesh sling is an effective and safe operation method to treat children severe congenital blepharoptosis.