For the measurement of the fat contents and nutritional status of urban High School girls, an intensive examination was conducted on a total of 2,085 students from 13 to 19 years of age groups. Total body fat cotents were measured by Skin-fold thickness with a Skin-fold Caliper manufactured by Cambridge Scientific Industrial Inc. at four sites of the body and it was calculated by Kim's regression equation. And Heights, Weights, and Chest circumferences were measured with Martin's Anthropometer. As the results of this study, the following conclusions were obtained: 1. The averages of heights, weights and chest girths were 153.1 cm, 46.2 kg and 76.6 cm. respectively. 2. The mean Skin-fold thicknesses of each site measured with a Lange skin-fold Caliper were: Sub-scapular: $13.44\;mm{\pm}4.41\;mm$. Abdominal : $10.55\;mm{\pm}4.02\;mm$. Lumbar: $10.56\;mm{\pm}4.06\;mm$. Upper arm: $15.35\;mm{\pm}4.37\;mm$. Total Average: $12.46\;mm{\pm}4.48\;mm$. 3. The average Skin-fold thicknesaes by age were as follow: ·9.02 mm at 13 years of age. 10.04 at 14, 11.82 at 15, 14.43 at 16, 15.12 at 17, 16.48 at 18, and 16.61 at 19 respectively. 4. The mean of fat contents calculated according to regression equation was 11.04kg. (9.14 at 13, 9.98 at 14, 11.12 at 15, 11.74 at 16, 12.21 at 17, 12.96 at 18, 13.29 at 19 respectively.)