To explore the curative effect of FDS, gentamicin, dexamethasone a- chymotrypsin treatment discharge stage of plasma cellmastitis.Methods in our hospital from 2009 July to 2013 June 29 cases of liquid phase discharge plasma cellmastitis patients, given FDS lesions breast duct, gentamicin, dexamethasone a- chymotrypsin mixture irrigation treatment, and to analyze the effects of. Results of the 29 patients treated, 1 cured 3 cases (10.3%), 2 times of treatment 5 cases were cured (17.2%), treatment of more than 3 cured 19 cases (65.5%), 2 cases turned to other treatment. Conclusion fiberoptic ductoscopy provides a new, effective treatment for discharge period with plasma cellmastitis.