The so-called blockage of the lacrimal gland in infants, clinically known as lacrimal obstruction, is usually not self-healing and needs to be treated accordingly. Congenital lacrimal duct obstruction is caused by a membranous blockage of the Hasner flap covering the end of the nasolacrimal duct. Most infants can open on their own 4-6 weeks after birth, so local massage and antibiotic drops can be used first to prevent infection. If it does not heal on its own or if treatment is ineffective, lacrimal duct exploration can be considered after six months. If left untreated, it may lead to lacrimal sac infections, with pus-like discharges in the eyes, forming “neonatal lacrimal sac inflammation”. If an infant is still teary-eyed after six months, parents are advised to take their child to the pediatrician or ophthalmologist at the hospital for an examination and symptomatic treatment. Parents should pay attention to the baby’s eye hygiene in their daily life, and also ensure that the living environment, temperature and humidity are appropriate to ensure local air circulation.