There were a number of factors which influenced bone maturation and recently, the patterns and sequence of thetimes of ossifications were not similar with previous reports. So the author studied statistically the bone age oftotal 1092 children, by the roentgenograms of wrist, elbow, and foot, who had visited B.N.U. Hospital during 5years dating from March, 1971 to March, 1976. The results obtained are summarized as follows: 1. The numbers ofchildren, aged from 5 to 8 years old, were 853 (80.2%) among total 1092 cases. the ratio between male and femalechildren was about 1:1 2. Some variations were observed in the time of appearance of each carpal bone in these agegroups, but constantly visualized bones were capitate, hamate, triangular bones. 3. As compared with previousreports in Korea, 3-4 months were shortened at the view points of carpal bone ossification. But still noteddelayed visualization as compared with that of American children more than one year. 4. The age difference betweenchronological and bone age became pronounced as growing old in this age groups. 5. The sex difference of the timeof appearance of ossification centers was less pronounced as compared with previous reports.