Objective To study the effects of endoscopic dacryocystorhinostomy on chronic dacryocystitis.Methods It was a retrospective study.Eighty-four cases (86 eyes) of chronic and recurrent dacryocystitis treated with endoscopic dacryocystorhinostomy with silicone stent intubation were studied retrospectively.Results After 3～12 months of follow-up,the following outcomes were noted:there were no clinical symptoms or signs in 70 eyes (81.40％),10 eyes (11.63％) had improved and the other 6 eyes (6.98％) were not satisfactory.A total of 80(93.02％) of 86 operations had good resuhs.Conclusion Endoscopic dacryocystorhinostomy with silicone stent intubation for the treatment of chronic dacryocystitishas without facial scars can be used as the preferred method for treatment of this disease.Inserting the stent correctly can prevent ostiole atretostomia and dilate the lacrimal passage,and will improve the success rate of endoscopic dacryocystorhinostomy.