Neonatal lacrimal sacculitis is a congenital eye disease in children with a high prevalence of 5% to 6%. The disease is characterized by unexplained tearing soon after birth, i.e., “teary eyes” even when not crying, and frequent mucus or purulent discharge from the eyes, either in one or both eyes. The common cause is a membranous obstruction of the Hasner valve at the end of the nasolacrimal duct, which leads to persistent tearing and infection, or incomplete development of the lower end of the nasolacrimal duct, which does not complete “canalization”. If the disease is not actively treated, it can easily develop into acute and chronic dacryocystitis, as well as many other ophthalmic diseases, such as conjunctivitis, keratitis, corneal ulcers, lacrimal sac fistula, etc. Treatment of neonatal dacryocystitis: The treatment methods include conservative treatment and lacrimal duct irrigation, lacrimal duct exploration and lacrimal duct intubation. Conservative treatment mainly refers to the tear sac massage, method: parents with fingers index finger or cotton swab in the inner corner of the slightly lower skin (tear sac area) moderate force massage squeeze, pressure after the corner of the eye may have mucus or thick secretions overflow (suggesting that the pressure force is more appropriate), and then wipe the cotton swab clean secretions, with antibacterial eye solution (such as Tobias eye solution) point eye, 3-4 times a day. The purpose of lacrimal sac massage is to promote the opening of the lower nasolacrimal duct. The timing of lacrimal duct exploration: lacrimal duct irrigation and lacrimal duct exploration are better methods for treating neonatal dacryocystitis. Although the massage method can make some of the children cured, but some cases because of the lower segment of the nasolacrimal duct obstruction membrane is thick, massage mechanical force can not make the membrane rupture. If the above conservative treatment of lacrimal sac massage is not effective, early lacrimal duct exploration treatment is advocated. The lacrimal duct exploration is a mechanical solution to the congenital obstruction of the nasolacrimal duct, so that its drainage is smooth, and then with the treatment of local antibiotics, so that the inflammation is quickly controlled, and the corresponding symptoms also quickly disappear. At present, the timing of lacrimal duct exploration tends to be younger, generally chosen after 2-4 months of age when conservative treatment is ineffective, you can choose lacrimal duct irrigation and lacrimal duct exploration, the success rate is up to 90% or more, most children can be cured. Of course, for children with congenital lacrimal duct malformation or bony stenosis, multiple lacrimal duct explorations cannot be forced. What should be done when lacrimal tract exploration in children is not effective? Tear duct probing is the preferred treatment for neonatal dacryocystitis, although the success rate is high, and tear duct intubation is the preferred treatment for children with repeated unsuccessful tear duct probing. The general ineffectiveness of lacrimal duct probing 2-3 times indicates a high probability of incomplete development of the lower end of the nasolacrimal duct or bony stenosis, and repeated lacrimal duct probing may cause increased mucosal damage and adhesions in the lacrimal duct wall. Minimally invasive stent lacrimal intubation is suitable for younger children, generally for children with lacrimal duct obstruction over 2 years old. The most common causes are neonatal lacrimal sacculitis and congenital lacrimal duct obstruction, and other causes are congenital inversion of the eyelid, allergic conjunctivitis, and congenital glaucoma. If parents find that their baby is “silently weeping” without crying, they should promptly take their child to the hospital for an examination to determine the cause of the weeping and for timely treatment and therapy. In addition, because the initial treatment of neonatal dacryocystitis is conservative, the timing of the conservative period has a great impact on the effectiveness of non-conservative treatment. A long conservative period increases the tear duct fibrosis scarring and is not conducive to the next step of treatment.