Objectives : The oral health education for interaction between snack and oral health is made more in detail, it seems to contribute to improvement of oral health by reducing occurrence of dental caries. Methods : This study performed the survey for 530 high school and college students living in Y City,Chungbuk for 10 days from June 14, 2011 to understand the difference by the level of snack recognition. 530copies of questionnaire were collected, the final 502 copies were analyzed and the results are as followings. Results : 1. As for the snack intake frequency, ‘sometimes’ and ‘2~3 times a day’ was found to be largest with 32.0% respectively in female and ‘sometimes’ was largest with 34.9% in male. As for the ‘2~3 times a day’ was most in high school students with 31.5% and ‘sometimes’ was most in college students with 39.0%. 2. As for snack characteristics, ‘crispy’ was most preferred in female and male with 43.7% and 39.4%respectively and, by school year, high school students and college students preferred ‘crispy’ most with 39.1% and 46.0% respectively. 3. As for the item of meal, ‘sometimes skip’ was most in female with 46.1%and ‘all three meals a day’ was most im male with 51.4%. ‘All three meals a day’ was proved to be most with 48.3%in high school students and ‘sometime skip’ was most in college students with 48.0%. 4. As for the difference of oral health management by school year, college students (3.37±0.70) proved to be higher in the oral health management (p＜.01) than high school students (2.98±0.81) and the Negative snack recognition group (3.24±0.73) was found to be higher in the oral health management (p＜.01) than the Positive snack recognition group (3.06±0.82). Although the interaction between school year and snack recognition level was not different in case of college students, the Negative snack recognition(3.17±0.77)proved to manage higher oral health (p＜.05) than the high snack recognition gathering (2.81±0.80) in case of high school students. 5. As for the difference of the oral health most im male wex and). Although the innteractifemale (3.39±0.72) proved to most the oral health (2.(p＜.01) than male (2.81±0.75) and the group with Negative snack recognition terac (3.24±0.73) most d the oral health (2.(p＜.01) than the group with Positive snack recognition level (3.06±0.82). As for effects of interaction between sex and snack recognition level, while there was not much difference in the oral health management by the snack recognition level in case of female, the cluster of low snack recognition level (3.03±0.69) proved to manage the oral health more (p＜.01) than the gathering of high snack recognition level (2.59±0.75). Conclusions : To see the results as above, it can be seen the oral health management is higher as the snack recognition level is higher by sex and school year.