AIM:To explore the therapeutic method of treating chronic dacryocystisis with nasal endoscopic dacryocy-storhinostomy.METHODS:A total of 30 patients(32 eyes)of chronic dacryocystitis were submitted to nasal endoseopic dacryocystorhinostomy.They underwent the irrigation of lacrimal passage after the surgery,and were followed up by endoscopy for aperiod range from 1-3 years.RESULTS:Twenty-six eyes(81%)were cured,4 eyes (13%)were improved,and the total effective rate reached to 94%.CONCLUSION:Nasal endoscopic dacryocystorhino-stomy for the chronic dacryoeystitis is an ideal way to treat the chronic dacryocystitis,because it possesses the advantages of small tissue injuries,simple and quick operation,fewer complications.