AIM: To report the data of 28 cases of congenital nasolacrimal duct obstruction who failed in the first probing of lacrimal passage in our hospital, summarize the strategy of retreatment.

METHODS: Retrospective study, selected 591 cases of children with 28 cases in our hospital from Feb. 1, 2013 to Dec. 31, 2017, all were for the first time of probing of lacrimal passage through failure of children with congenital nasolacrimal duct obstruction(not including traumatic and lacrimal duct abnormalities), collect the case history, the nasal situation, the age of the first time to probing of lacrimal passages, information such as case data before and after treatment.

RESULTS:In 28 cases, 15 cases with probing of lacrimal passage joint tube insertion second time, take the tube after cured, 10 cases treated with inferior turbinate, again with probing of lacrimal passage joint tube insertion, take the tube after cured, 2 cases of children with acute dacryocystitis often strikes, under general anesthesia with transnasal endoscopic dacryocystorhinostomy, 1 cases of children with bony nasolacrimal duct obstruction and strictures, with tears spill without overflow pus, pay a follow-up visit, sinus fully developed after the age of 13 under transnasal endoscopic dacryocystorhinostomy.

CONCLUSION: Congenital nasolacrimal duct obstruction of lacrimal duct exploration for the first time failed again take personalized ladder solution treatment, reasonable treatment of the disease.