AIM:To investigate the surgery of trephining and shaping on the lacrimal passages in the treatment of chronic dacryocystitis.·METHODS:Lacrimal passages former was used for 37 cases (38 eyes) who suffered from chronic dacryocystitis,and detained for 3 months with regular wash of lacrimal passages and drugs.The follow-up time was 3 to 15 months,the mean time was 10 months.·RESULTS:After sugery,34(89%)eyes were healed and 3 eyes (8%) were unobstructed but not smooth and 1 eye (3%) was ineffective.·CONCLUSION:Former for only one time shaping on the lacrimal passages is an easy,safe and nontraumatizing procedure for chronic dacryocystitis.