AIM:To study the surgical technique of nasal endoscopic in dacryocystitis patients of different ages. ·METHODS:According to the nasal cavity’s anatomical and physiological characteristics (lateral wall) in different ages,the operation time was reasonably controlled by different surgical incision,anesthesia,energy output of electric knife and the concentration of mitomycin C.·RESULTS:The operation was completed successfully,and the success rate was 99%.·CONCLUSION:The dacryocystitis patients of different ages have the different perception,such as expectations of surgery,fear of surgery,surgical compliance,the feeling electric shock,levels of pain tolerance and so on. The rational surgical techniques are key factors in completing the operation.