Nasolacrimal duct obstruction is a common disease, which have a high morbidity. The treatment of this disease is to take surgeries. In recent years, with new materials and various kinds of endoscopic technique gradually maturing, the treatment for nasolacrimal duct obstruction have had great advance. But after the operation,there are some people whose nasolacrimal duct obstruction happen again. The research on the mechanism of recurrence of nasolacrimal duct obstruction also increased nowadays.In this paper, the surgical treatment and the mechanism of the recurrence of nasolacrimal duct obstruction were reviewed.