This study divided people into the age groups of their twenties, thirties, forties and more than fifties and multilaterally examined their nutritional knowledge and mode and attitude of food intake in order to survey the effects that the level of concern with nutritional knowledge according to age has on the mode of food life with a sample of women in more than their twenties who live in the region of Seoul. If I examine the general characteristics of those who are surveyed, in age their twenties accounted for the most part of 34.6 percent, and in educational background people who did not graduate from high schools accounted for 58.6 percent and jobless people 55.9 percent and there were many people whose standard of living was thought to be in a middle level, and in the income of home, people with less than two million Won were universal, and in physical condition an average case accounted for 37.8 percent, but the case that most of people were fat(49.1%) was characterized by more than a thin case(13.1%,). In the object of survey the case of being nutritionally reeducated was as 76.1% higher than the case of not doing so, but the necessity for nutritional education was not felt by 62.7%, and statistical significance was indicated according to age (p<.001***) and in the sources of nutritional knowledge mass media accounted for 49.3%. The knowledge about nutrition was well known as a whole and in evaluating nutritional knowledge, top group accounted for 75.4% and evaluating scores according to age showed differences, but had no statistical significance. As a result of surveying the actual condition of food intake and food habit, those who are surveyed was surveyed to observe the quantity of a meal (31.9%) best, and they were revealed in the order of 30.5%, of taking in fruits and 28.3%, of having meals regularly. In particular, in the regularity of meals, statistical significance according to age(P<.001***) was indicated by their fifties accounting for 38.7% and their twenties 10.9%. In food habit, regardless of age, the case of taking in marine algae for 0 to two days indicated 53.7% and the case of faking in greeny yellow vegetables 52.0%, and we could see that modern people evade the kind of vegetables, and in the scores of evaluating food habit a middle group accounted for 57.3% and as age increases, the group of higher age showed more desirable mode of food life than the one of lower age, showing statistical significance(p<.01**).