Neonatal dacryocystitis is caused by secondary infection due to the lack of degeneration of the embryonic remnant membrane at the lower end of the nasolacrimal duct, which obstructs the lower end of the nasolacrimal duct and traps tears and bacteria in the dacryocyst. Due to the stimulation of long-term tear and mucopurulent secretions, affected children may develop periocular skin eczema, complicated by conjunctivitis and keratitis. In some cases, acute inflammation of the lacrimal sac can occur, with red, swollen, hard, painful skin in the lacrimal sac area, and in severe cases, life-threatening orbital cellulitis or even intracranial infection. Therefore, neonatal dacryocystitis should be treated as early as possible. The newborn lacrimal sacs within three months are treated by massage and pressure flushing of the lacrimal sac area, while newborn lacrimal sacs above three months should be treated by timely lacrimal duct exploration, and for children who cannot be treated by more than three lacrimal duct explorations, lacrimal duct intubation, nasolacrimal duct stenting and lacrimal sac nasal anastomosis can be used for treatment, and these methods must be chosen with care.