Neonatal dacryocystitis is caused by the lack of degeneration of the embryonic remnant membrane at the lower end of the nasolacrimal duct; this obstruction is membranous and the vast majority (over 95%) can be cured by lacrimal duct irrigation and lacrimal duct probing. This treatment must be completed within one year of age. If lacrimal duct irrigation or lacrimal duct probing is performed beyond one year of age, the obstruction of the lacrimal duct expands due to repeated inflammatory stimulation, making the treatment significantly less effective. Many doctors and parents have certain concerns about lacrimal tract exploration, fearing that lacrimal tract exploration may damage the lacrimal tract and reject it, but this concern is actually superfluous. The risk of lacrimal duct probing: produce false channel, tearing of the lacrimal duct, the risk of delaying lacrimal duct probing: aggravate the length of nasolacrimal duct obstruction, reducing the success rate of probing. However, lacrimal tract probing by a skilled surgeon using a specially designed pediatric lacrimal probe will produce few false tracts and tearing of the lacrimal ducts. We recommend that neonatal dacryocystitis of less than three months be treated by massage of the lacrimal sac area and lacrimal duct pressure irrigation, and neonatal dacryocystitis of more than three months should be treated promptly with lacrimal duct probing. Introduce pediatric lacrimal probe: this probe handle is fine steel wire, elastic and flexible, not easy to tear the tear duct, the tip is a hemispherical structure, relatively blunt, not easy to produce false channel.