Laser treatment of lacrimal duct obstruction is easy to perform and has no significant complications, so it is the most common technique for unblocking lacrimal ducts. The combination of laser treatment and lacrimal duct placement can prevent postoperative re-adhesion and keep the lacrimal duct open, thus achieving a cure. The extraction time is 3-6 months. Qingdao Municipal Hospital Ophthalmology Department Liu Fuling Indications for lacrimal laser: ① Simple lacrimal obstruction. ② occlusion or narrowing of the tear duct. ③Partial chronic dacryocystitis. For patients with chronic dacryocystitis with more purulent secretions, long duration of disease and heavy lacrimal proliferation adhesions, laser treatment is not exact and surgical treatment is recommended. At present, nasal endoscopic lacrimal sac nasal anastomosis is the ideal surgical procedure for the treatment of dacryocystitis, which is minimally invasive, has a clear visual field and leaves no facial scars. In neonates, laser treatment is not suitable for dacryocystitis. If conservative treatment and local massage are not effective, early lacrimal duct exploration or lacrimal duct placement is recommended.