The purpose of this study was to develope a questionaire measuring clothing behavior of elementary school children. At first, after pretest, the clothing behavior questionaire consisted of 70 items which were devided into 7 subscales i.e. Clothing interest, Clothing satisfaction, Clothing management, Clothing sex-role, Clothing comfort, Clothing conformity, and Clothing independence. Each item was rated on a 3-Point scale. Samples were 447 boys and girls (4 th, 5 th, 6 th grade) of three elementary schools in Seoul, Korea. The data were analyzed by item analysis and factor analysis. Factor analysis was useful in attempting to establish contruct validity. Item validity was examined based on the correlation coefficients and item discriminating power through the chi-square. Reliability was examined based on the Cronbach`s Alpha Reliability Coefficient and test-retest method. With this analysis the subscales were reconstructed to following 6 factors. Clothing conformity items were not clustered by the factor analysis. 52 items of 6 factors selected by the analysis. The factors characteristics were as follows: Clothing interest (10 items) Clothing satisfaction (11 items) Clothing management (8 items) Clothing sex-role (12 items) Clothing comfort (6 items) Clothing independence (5 items)