1, remove the causes: such as: eyelid inward and outward turning, inverted eyelashes, eyelid margin deformity, treatment of ocular surface diseases, tear caruncle abnormality, conjunctival relaxation tear lake becomes shallow. 2.Lacrimal duct surgery 1)Lacrimal punctum stenosis, closed cord, neoplasm, etc.: lacrimal punctum molding. 2)Lacrimal duct obstruction: laser molding + tube placement. 3)Lacrimal duct fracture: lacrimal duct anastomosis + tube placement. 4)Chronic dacryocystitis: external or internal nasal lacrimal sac anastomosis. 5)Simple nasolacrimal duct obstruction: laser molding + tube placement. 6)Very small lacrimal sac or severe lacrimal duct obstruction: conjunctivo-nasal lacrimal sac anastomosis or lacrimal stent. 7)Dacryocystitis in children: first local massage, invalid probing (1 time invalid, 1 week later, then probing), unable to probe the nasal lacrimal sac anastomosis.