Under normal circumstances, the tear ducts of the eyes will not be blocked. Inflammation, trauma and foreign objects can lead to blockage of the tear ducts, which can be treated by tear duct flushing, tear duct probing and tear duct implantation. 1. Inflammation: common inflammatory diseases of the eye include acute and chronic conjunctivitis, erysipelas, blepharitis, dacryocystitis, etc., which are often accompanied by the secretion of purulent substances, thus leading to blockage of the tear ducts of the patients and obstruction of the drainage of tears. This type of tear duct obstruction, patients can follow the doctor’s instructions to use tobramycin eye drops and other drugs anti-infection treatment, and then the tear duct irrigation, so that the tear duct is open. 2. Trauma: eye trauma can damage the lacrimal duct, when the lacrimal duct is damaged, scar tissue can lead to the patient’s tear duct obstruction, the patient can be feasible to tear duct probing surgery or lacrimal duct implantation, in order to ensure that the lacrimal duct is open. 3. Foreign objects: shed eyelashes, sand, dust, tearstone, etc. can enter the tear duct with tears, which can lead to tear duct obstruction, at this time you need to remove the foreign body, so as to dredge the patient’s tear duct. It is recommended that patients with blocked tear ducts consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.