I. Problem Human being exist only through the interactive experience of life within social relations groups, and the human persona’ity has been conceived as a product of social conditioning. Then, as human being does not have the factor for socialization by some traits orginally and inherently, but has a capacity capable of learn for it, human personality for socialization and social adjustment has been developed by a product of social conditioning factors within process of human growth. One of conditioning factors of social adjustment or social maladjustment is the interactive experience of life within physical activity group and experience of physical activity. Especially, some physical teaching method for physical activity in school is the more important factor. On the basis of this assumption, the study is to investigate the effects of the factors of physical activity upon the social adjusted group and social maladjusted group. II. Method and procedure At firts, 695 student (male-278, female-417) in 2nd year grade of middle school and classified into two groups; the social adjusted group and the social maladjusted group by using the method of Moreno’s Sociometric Test. So, about 120 students are selected as the experimental persons, and about a half students are define das adjusted students and the others are defined as maladjusted students among these students. The tools used for measurement of the physical exercise ability, physical training and learning ability, the marks of physical constitution and interest level for physical exercise of the two groups of students were the physical strenth test which is tested to students in school (8 items), the marks of physical training examination in school, the body complete index by Rohrer and Interest inventory constructed by Bum-mo Chung. The researcher varified the differences of the mean scores on these tests between the social adjusted group and the social maladjusted group by the methods of C.R. verification and variability of standard deviation. III. Result 1) As to hypothesis about the differences of physical exercise ability of the two groups, social adjusted students have more ability than social maladjusted students, boys and girls together. So, a good training of physical exercise ability is an effective group approarch to make isolates social adjusted students and developmenting of socialization. 2) As to hypothesis about tole differences of physical training and learning ability of the two group, social adjusted group students make marks better and learn better than isolates, boys and girls together. 3) As to hypothesis about the differences of physical constitution of two groups, most of adjusted students have a good developed and balanced bodies, but most of maladjusted students have unbalanced physical constitution either fat or thin. 4) As to hypothesis about the differences of physical exercise interest, any different problems between two groups could not be discovered in interesting level of physical exercise interest test, but getting their scores are almost same, but male’s has higher than female’s.