The subject of 808members of infants(male and female) of Seoul and other districts was investigated to grasp the actual conditions of the physique and physical strength of Korean infants. 1. Period of Research: October, 1985. 2. Kind of Research: Height, Weight, 20M Run, Standing Jump, Tennis Ball Throw. 3. Measurement and Judgment : Based on the rule of measurement and judgment of Harada`s physique and physical strength. As the result of the analysis of invetigation contents, the conclusion is as follows: (1) Korean infants are remarkably taller than Japanese ones, Besides Seoul infants are taller than local ones. (2) The weight of Korean infants is heavier than Japanese ones, and in physical pattern Korean infants are mostly balanced like Japanese ones. In addition, there are plenty of fatter infants and thin ones in both countries alike. (3) Korean infants are inferior to Japanese ones in physical strength, but the former is superior to the latter in Standing Jump. (4) When Seoul infants are compared with local ones in physical strength, Seoul infants are superior to local ones on Running and Throwing, but local infants are superior to Seoul ones in Jumping. (5) Male infants are taller than female infants and also heavier than female infants. The former is excellent in physical strength. There is great difference between male and female particularly in Throwing. (6) Great effort should be made to improve the following defects. (a) Physical strength is inferior compared with the improvement of physique. (b) The improving degree of physical strength shows a drop in increasing age. (c) The phenomena of both extremities of physique are not desirable.