Children in emotional or eye stimulation, tear secretion will increase sharply and appear tears, this is a normal phenomenon, but in a calm state, the child will also be out of tears should pay attention to timely find the cause, timely treatment. The main causes of pediatric tears are the following. 1, neonatal dacryocystitis: is the most common cause of pediatric lacrimation, the incidence of about 5% to 6% of newborns, monocular onset is common. The main reason is that the lower end of the nasolacrimal duct has not been fully developed for a period of time after birth, and is closed by a layer of residual film causing tear duct obstruction, and secondary bacterial infection, resulting in lacrimation and pus. A simple way to judge is to use your finger to press the skin of the corner of the big eye, and you will see yellowish white pus flowing from the corner of the big eye. In terms of treatment, the main thing is to massage the skin at the lower part of the corner of the eye (tear sac area) to open the lower nasolacrimal duct, together with antibacterial eye solution (such as Tobias eye solution), most children can be cured. If the above treatment does not work, lacrimal duct irrigation and exploration under general anesthesia is used. 2. Congenital inversion of the eyelid: It is also common to see tearing caused by irritation of the cornea and bulbar conjunctiva, and it is often accompanied by increased blinking, inattention and rubbing of the eyes. Parents can look closely at their child’s eyes and see the eyelashes falling backwards onto the eyeball like a brush and rubbing the eyeball. In terms of treatment, if the impingement is not obvious and the irritation is not too severe, it can be observed and most children with congenital entropion can have their symptoms improved or eliminated when the eyeball grows up. If if the impingement is obvious and the irritation symptoms are heavy, then a lid entropion correction surgery will be done to treat it. 3. Neonatal pus leaky eye: This is a hyperacute bacterial conjunctivitis caused by gonococcal infection, also known medically as “gonococcal conjunctivitis”. Generally 2 to 4 days after birth, mainly due to contamination by vaginal secretions of the mother with gonococcal vaginitis at birth. This disease was more common before liberation, and many double blindnesses were caused by this disease. After the liberation, this disease has basically been eliminated because of the outlawing of prostitution, but in recent years, with the “resurgence” of various sexually transmitted diseases, the number of such patients has gradually increased, and there is a tendency to make a comeback, which is worth warning. The disease develops rapidly, with photophobia, lacrimation, high edema of the eyelids and conjunctiva. The eye discharge is initially plasma, and then quickly turns into purulent, with large amounts of yellow pus flowing out of the lid fissure, accompanied by lacrimation and difficulty in opening the eyes, which can be complicated by corneal ulceration and corneal leukoplakia within a few days or even hours in severe cases, seriously affecting vision and even leading to blindness due to corneal ulcer perforation and total uveitis. sepsis, etc. This disease can lead to serious consequences if not treated in time, early diagnosis and early treatment is very important. 4, congenital atresia of lacrimal dots and ducts or absence of lacrimal dots and ducts: This is a relatively rare congenital abnormality in the development of the lacrimal ducts, but the symptoms of lacrimation are more serious, and the lacrimation continues after birth, but the good thing is that it is usually not complicated by bacterial infection, so there is no pus. A simple differentiation from neonatal lacrimal sacculitis is the absence of pus outflow by pressing on the large corners of the eyes. Careful parents can find a healthy eye, about 3 mm from the corner of the eye at the junction of the skin and red mucous membrane, the upper and lower eyelids are visible each a small protrusion, the small protrusion can be seen in the center of a small hole, this small hole is the tear dots. Children with this eye disease do not have these two small holes, or the holes are not open. Such patients need surgery to solve the tearing problem. 5, other causes: such as conjunctivitis, keratitis, blepharitis, lacrimal glanditis, congenital glaucoma, etc. can also cause tearing in children. For these causes of lacrimation, the primary disease is generally more obvious and easily identified. Treatment is mainly directed at the primary cause. Usually the tearing symptoms will be eliminated after the primary disease is cured. The above mentioned is only some basic knowledge about pediatric tearing, parents can use this knowledge to make only a general judgment about their child’s condition. In fact, the causes of tearing in children are complex, and treatment methods vary and require an experienced doctor. If you find that your child has similar tearing symptoms, you should go to the hospital and diagnose and treat them as early as possible without delay.