Congenital lacrimal duct obstruction is the most common cause of lacrimal overflow in infants and children, manifesting as persistent lacrimation or increased secretion in one or both eyes after birth. It is caused by congenital dysfunction of the lacrimal duct, mostly due to congenital obstruction of the lacrimal duct by residual membrane or epithelial debris, and rarely due to nasal malformation or bony narrowing of the nasolacrimal duct. Commonly used treatments include massage, pressure flushing and lacrimal duct exploration. The younger the age, the higher the chance of cure by conservative treatment. Therefore, we recommend early local massage for children with lacrimal duct obstruction to increase the impact on the lacrimal duct, thus accelerating the ductalization process. For pressure irrigation, we believe that the cure rate is more likely in small children, but the cure rate decreases significantly in children >6 months of age, and generally 3 times of irrigation is sufficient, repeated irrigation does not help to improve the cure rate, but increases the chance of tear duct damage. If conservative treatment is ineffective or if parental compliance is poor and follow-up conditions are inadequate, lacrimal tract exploration is the most effective treatment. The best time for surgery is generally 4-6 months of age. Recent statistics from our hospital show that the cure rate of lacrimal exploration surgery can reach 97.77% in one operation. Therefore, lacrimal tract exploration is a very effective treatment method, with high cure rate, simple operation, less cost, less damage, and no recurrence, which is the first choice among lacrimal tract surgery for children with lacrimal tract obstruction.