Objectives : The purpose of this study was to investigate the relationship among the practice application of oral hygiene auxiliary supplies, oral health state of patients in S university dental clinic. Methods : The subject in this were 261 patients who got a scaling at the oral hygiene practice lab in the department of dental hygiene in S university dental clinic from April 1 to May 31, 2010. For the data analysis, an SPSS WIN 11.5 program was used and its signification level was 0.05. Results : 1. For the oral health state according to sex distinction, it showed the men’s 0.78 MT index was higher than women’s 0.48 MT index and statistically significant difference. 2. For FT index, women(4.72) was higher than men(3.50) and it showed statistically significant difference(p＜0.05). 3. For the oral health state according to sex distinction, Why not use oral hygiene auxiliary supplies showed statistically significant difference(p＜0.05). 4. For the practice application of oral hygiene auxiliary supplies according to age distinction, 18.5% more than 30years replied as I use interdental brush and it showed statistically significant difference. 18.5% more than 30years replied as I use powered brush and it showed statistically significant difference(p＜0.05). 5. For the oral health state according to the practice application of oral hygiene auxiliary supplies distinction, there were significant difference that dental floss, interdental brush, mouth rinse product, Why not use oral hygiene auxiliary supplies(p＜0.05). Conclusions : The findings of this study were lower than the utilization of oral hygiene auxiliary supplies. Therefore,to increase the use of oral hygiene auxiliary supplies to patients of the appropriate selection and correct usage of oral hygiene auxiliary supplies and the resulting effects have sufficient training to practice more efficiently should be.