1, tear sac area massage: take the child supine head fixed, use one hand to press the inner canthus, the other hand from the head of the tear sac down to squeeze the tear sac, 2 to 3 times / d, and antibiotics and fishoil drops spot eye, once a week to review, treatment for 4 weeks is not effective to use pressure flushing method. 2.Lacrimal duct pressure flushing: take the supine head fixed, eye local point 1.4g/L Benoxyl 2 drops of surface anesthesia, insert the flushing needle into the lower lacrimal duct, while pressing the upper lacrimal duct, and then forcefully push in saline, the purpose is to make the liquid break through the blocked congenital residual membrane and make the lacrimal duct restore patency; if the pressure flushing method still can not make the lacrimal duct patency, use the lacrimal duct exploration flushing method. 3, lacrimal tract exploration and irrigation: supine position, fix the head and limbs, local point 1.4g/L Benoxyl 2 drops of surface anesthesia, the lower tear duct is too small can first expand the tear duct before using the No. 7 dental irrigation needle, the needle around the eye ointment to make it smooth and then insert the needle vertically into the lower tear duct about 1.5mm deep, then turn the irrigation needle to the direction parallel to the lid margin, towards the inner canthus in the direction of the lacrimal duct with the index finger finger to gently When it touches the bone wall, rotate the end of the needle upward and then slowly enter the needle downward and backward to a depth of 2.5 to 3 cm. After the patient swallows, the flushing needle is withdrawn and the flushing is repeated on the next day. Eye drops of Tobias antibiotic eye drops. 4.Surgical treatment: If repeated lacrimal tract exploration cannot restore patency, nasolacrimal duct stent implantation or lacrimal sac nasal anastomosis can be used for treatment.