The purpose of this study was is to propose an improvement in a resonable dietary attitude and to support the teenagers'' dietary habit by analyzing an actual status of the students'' night eating. This study was conducted a survey over 705 middle school students residing in Gyeonggi, classified into gender, and night eating group and non-night eating group, and analyzed the dietary habit by actual status of night eating such as the consideration factors at the time of choosing night eating, preference and intake frequency in each of menus, and night eating intake. The summarized results are as follows.
1. In general aspect over all of students, a rate of nuclear family in boy and girl students was the highest, a single-parent family in boy students and an extended family in girl students were estimated to be the most(p<0.05). In general aspect by separating night eating group and non-night eating group, ''irregular monthly pocket money'' was the most in night eating group and ''less than ￦30,000'' was the most in non-night eating group(p<0.01).
2. In weight(p<0.001), height(p<0.001), and BMI(p<0.01) by the students'' gender, the boy students were superior to the girl students in all of aspects. Non-night eating group''s BMI in boy students was higher than night eating group(p<0.05). The weight(p<0.05) and BMI(p<0.01) in non-night eating group was higher than night eating group.
3. In eating method of night eating among night eating intake and consumption, ''family purchases it'' was the highest rate in all of boy and girl students, and ''directly purchase it'' in boy students and ''family makes it'' in girl students were the next highest rate. There was a significant difference between boy and girl students(p<0.05). In person who take night eating together, ''together with all of family members'' was the highest rate in boy and girl students, and ''alone'' in boy students and ''take it with parents'' in girl students were the second highest rate. In time of night eating intake, the highest time is between 10 pm and 11 pm and the next highest time is between 9 pm and 10 pm. However, a response to between 8 pm to 9 pm was 20.1% in girl students and 9.4% in boy students. In time of night eating intake, as the boy students take it later than the girl students, it showed a significant difference(p<0.01). In physical change in next morning after night eating intake, ''feel nothing'' was the most in boy and girl students, a rate for ''swollen face, eyes and hands'' and ''dislike to take breakfast'' was the highest in boy students(p<0.01). In an effect of night eating intake on health and physical activity, a rate for "badly effect on health" was in girl students and rate for ''no effect at all'' was higher in boy students(p<0.01).
4. In consideration factors at the time of choosing night eating, the girl students considered ''origin of country'' more than the boy students(p<0.05). There was no significant difference in price, hygiene, sanitation and economical benefit, but the girl students showed higher score than the boy students.
5. In preference and intake frequency of night eating menus, the boy students prefer hamburger(p<0.001), french fries and hotdog(p<0.05) to the girl students and the girl students prefer chocolate and candy(p<0.01) to the boy students. The boy students took pizza(p<0.05), hamburger(p<0.01), french fries and hotdog more often than the girl students and the girl students took chocolate and candy more often(p<0.01). The boy students prefer fritter(p<0.05), skewered food(p<0.05), steamed dumpling(p<0.01), waffle, Chinese pancake, fish cake(p<0.05), noodles, Ramen(p<0.05), and Jajangmyeon and chaomamian(p<0.001) to the girl students. A rate for taking Ramen once or twice a week by all of boy and girl students was the highest and the boy students took steamed dumpling, donut, croquette, muffin, noodles, Remen, Jajangmyeon, chaomamian, Naengmyeon, Jolmyeon, rice noodles, spaghetti, rice cake more than the girl students. The girl students preferred fresh fruit(p<0.05) and fruit juice(p<0.01) to the boy students. In dairy products, there were a lot of the students who don''t take cheese and a rate for frozen desserts intake was relatively higher than one for milk and dairy products intake. And, the boy students preferred soft drinks(p<0.05), traditional drinks(p<0.01), trotters, Bossam, meat(p<0.05), chicken foot and cartilage(p<0.01) to the girl students. The boy students took beverage once or twice a week but the girl students took soft drinks once or twice a month(p<0.01), an intake rate for traditional drinks in boy students was higher than in girl students(p<0.01) and the intake rate for boiled egg, fried egg, trotters, Bossam, meat in boy students was higher(p<0.01, respectively).
6. In dietary habits, the boy students in night eating group showed the higher points in unbalanced eating(p<0.05), overeating(p<0.01), fast eating(p<0.05), saltly eating(p<0.01), spicy eating(p<0.05), skipping meal(p<0.01), irregular meal time(p<0.001) than ones in non-night eating group. The girl students in night eating group showed the higher scores in unbalanced eating(p<0.01), overeating(p<0.01), salty eating(p<0.01) and irregular meal time(p<0.001) than ones in non-night eating group. The boy students eat faster(p<0.001) and saltier(p<0.001) than the girl students. And, night eating group had the higher scores in unbalanced eating(p<0.001), overeating(p<0.01), fast eating(p<0.01) and irregular meal time(p<0.001) than non-night eating group.

Consequently, the boy students and night eating group have more problems than the girl students and non-night eating group and also, the boy students and night eating group have unsatisfactory dietary habits. In menus of night eating, carbohydrate and fat are mainly dominated and menus with a low nutrition the intake frequency and preference are high. As weight, height and BMI in boy students are higher than in girl students, the requisite nutrition quantity for the boy students is higher but they need to abstain night eating with a low quality and excessive quantity. It is significant to take night eating with a high quality food in proper time, proper quantity, and a desirable dietary habits. In dietary life at an adolescent period, considering that frequency of food intake at night time the study is completed due to excessive learning is increasing, it is necessary to make a proper space around school zone and after-school learning centers where foods suitable for late-night menu are easily purchased and taken so that the adolescents'' proper dietary habits could be improved. In addition to this, preparing foods by family and taking qualitative night eating intake rather than purchasing and taking a low quality food at home should be recommended. Besides, in order to make a desirable dietary life it is necessary to have a proper judgement and choice with a desirable nutrition knowledge when taking night eating, thus, a practical and systematical nutrition education are required.