In our daily outpatient work, we often have babies with teary eyes who have not been born long enough to see a doctor. The uniform symptom is constant tearing, some even with yellowish pus outflow, increased secretion, bloodshot eyes and ulcerated skin at the corners of the eyes. Parents are very anxious: why will the child tear more than it? It turns out that about 2-4% of babies are born with the lower exit of the nasolacrimal duct closed by a layer of embryonic remnants (as shown in the figure), or because the epithelial debris blocked the tear duct, the normal secretion of tears can not flow to the nasal cavity, forming the phenomenon of more than tears. Over time, the flushing effect of tears on the surface of the eye is weakened, and bacteria take advantage of the opportunity to enter, and once infected, the tears turn into pus. Usually, neonatal dacryocystitis affects the eye unilaterally and less often bilaterally. It is even rarer when it is due to bony nasolacrimal duct dysplasia or narrowing. If your baby is diagnosed with lacrimal duct obstruction or dacryocystitis, parents should not be too nervous and should not rush to have surgery. Most babies are still in the developing stage of their tear ducts at 3 months of age and can be treated conservatively first. The specific method is that parents must daily at the inner corner of the child’s affected eye, with a clean thumb or index finger finger pressed on the root of the baby’s nose and the central part of the eye’s inner canthus, squeezing in the direction of the eye, at this time will find a part of the baby’s eye corner pus flow out, wipe clean, and then use the finger along the same side of the bridge of the nose, from the top down to moderate tear sac area massage, massage fingers do not slide on the skin or Rubbing, but with the thumb close to the skin will be used for the force of the tear sac area under the skin, from the top to the bottom of the sliding massage. Such massage can be carried out 2 to 4 times a day, ranging from 10 to 15 times each time. After the massage, apply antibiotic eye drops locally in the affected eye 3-4 times a day, 1 drop each time. When the baby is already 3 months old and the tear duct is still not working after the above conservative treatment, a tear duct irrigation can be performed in the pediatric ophthalmology department of the hospital to understand the exact site and degree of obstruction. Afterwards, a lacrimal tract exploratory procedure is performed to open the tear duct by puncturing the membrane at the site of obstruction with a probe. Of course, there are certain risks associated with lacrimal tract exploration, such as transient bleeding in the eye or nasal cavity, swelling of the lacrimal sac area, and formation of pseudotracts. However, these reactions usually subside spontaneously within a few days to a few weeks after the lacrimal tract exploration. If the obstructed residual membrane is tough, multiple probings are needed to achieve success. In rare cases, the lacrimal duct is blocked due to a narrow bone or a deformity of the nose, so other methods to open the lacrimal duct should be considered. Many parents are afraid of their baby’s suffering and are reluctant to do early lacrimal duct exploration surgery. Some parents also mistake the tearing and increased discharge caused by nasolacrimal duct obstruction for fire, delaying the best time for treatment. Some older babies end up with failure due to the mechanization and toughening of the residual membrane, although they have been explored several times. If the baby is not given a lacrimal duct in time, it may cause inflammation of the tissues around the lacrimal sac or the formation of a lacrimal sac fistula, which is a fistula that is not easily cured completely and can affect the child’s appearance. The actual fact is that you can find out the symptoms of a blocked tear duct in your child, you should go to the pediatric ophthalmologist as soon as possible to avoid misdiagnosis and aggravation, so that you can give your baby a pair of clean and bright eyes as soon as possible.