Neonatal dacryocystitis is a secondary infection caused by the failure of the embryonic remnant membrane (Hasner flap) below the tear duct to degenerate and open after birth, resulting in prolonged stagnation of tears in the tear sac. The incidence of neonatal dacryocystitis accounts for 4% to 6% of newborns and is one of the more common eye diseases in newborns. The main manifestation of this disease is tearing and increased discharge from the affected eye, which is yellowish-white and accumulates in the medial corner of the eye, and in severe cases there can be a limited bulge in the tear sac area below the medial corner of the eye, with a large amount of discharge spilling out from the medial corner of the eye after pressure. If there is an acute inflammatory episode, there may be significant redness and pain, and the skin of the tear sac area may be congested and swollen, and in severe cases the skin may break down. The early treatment of this disease can be used to massage the tear sac area at the inner corner of the eye with fingers regularly to increase the pressure inside the tear sac, and at the same time give antibiotic eye drops to the eyes 3-4 times a day, usually after a few weeks Hasner flap can open on its own, and the condition will be cured. If the condition does not heal on its own after conservative treatment until the age of half a year, lacrimal duct exploration should be considered. The implementation of lacrimal tract exploration should pay attention to the following points: 1, the child’s tissue is relatively soft, the probe does not grasp the direction of easy to penetrate the false channel, once the formation of false channel will make the condition complicated; 2, lacrimal tract exploration has a certain degree of pain, the child is difficult to cooperate with the operation, if forced to perform surgery under local anesthesia, due to the child struggling to make the operation more difficult, easy to form a false channel or damage the tear dots, and will give the child Therefore, such children should be operated quietly under general anesthesia to ensure a successful operation.