A dietary survey of young childern from one to six-year old, was conducted in summer and in winter, in Yonggin-gun, Kyunggi-do, to survey the differences in food and nutrient intake between a one day and a three day term, and between the winter and the summer season, in an attempt to provide a basis for the development of adequate dietary survey methodology. A total of 65 children originally were surveyed from July 3 to 11, 1981. However, since 9 of the 65 subjects moved away from the original addresses, 54 subjects were available for the winter-term survey, which was conducted from January 15 to 23, 1982. Among a total of 13 foods, intake of cereals (p<0.001), vegetables (p<0.05), beverage and ice candies (p<0.05) were significant in affecting the daily difference : one day vs. three days. Intakes of energy (p<0.05) and carbohydrate (p<0.05) were also significant in affecting daily difference. Among a total of 13 foods, intake of eggs, milk and milk products, sea-weeds, vegetables, cereals, potatoes, fat and oils, were significant in affecting seasonal difference : summer vs. winter. Intake of fat and ascorbic acid were also significant in affceting seasonal difference.