The congenital lacrimal duct failure requires surgery, while the acquired lacrimal duct failure is mainly caused by infection, and the treatment is mainly anti-infection treatment. You can apply topical anti-inflammatory symptomatic treatment with Topaz eye drops, Colapidol eye drops, Gatifloxacin eye drops, Moxifloxacin hydrochloride eye drops, Erythromycin eye ointment, etc., and then carry out local flushing of the tear ducts, you can also add Ofloxacin eye drops and Topaz eye drops to the flushing solution when flushing the tear ducts. The prognosis is better with simultaneous tear duct irrigation. If the lacrimal duct cannot be opened despite repeated flushing, lacrimal duct exploration or lacrimal sac nasal anastomosis treatment of the lacrimal duct is recommended. However, postoperative eye drops with a phase of antibiotics, such as Topaz eye drops and levofloxacin eye drops, can also be used. Regular tear duct flushing is performed to keep the tear ducts open. Like tear duct obstruction, acquired infection is mainly due to secondary bacterial infection caused by conjunctivitis or keratitis, it is important to ensure eye health to avoid recurrence of tear duct obstruction.