This study aimed at investigate effect of self concept on achievement (motor-academic) for faculty of physical education students in Assiut through recognizing differences in self concept for students with different level of achievement (high - mediate - low), discuss relationship between self concept and achievement (motor — academic), and predictive possibility forecasting achievement extension by significance of self concept as a mediate factor, researcher used descriptive approach and implement this study on sample of (125) students from grade three in faculty of physical education in Assiut University, they are selected by using stratified randomly method for representing different achievement levels, researcher used result report of end year examination accomplishment and questionnaire of spontaneity self dictate, main results are finding: - Self concept are different according to achievement level. - There are statistically significant correlation between self concept and achievement (motor-academic). - We can predication of achievement (motor-academic) by using questionnaire of spontaneity self dictate.