Causal relations of determinants of achievement motivation for learning in physical education were examined based on the Expectancy-Affect model (EA model) presented in this study. This model assumed the causal linkages among (1) the achievement motivation for learning in physical education,(2) primary factors such as perceived expectancy and affect in physical education situations,(3) secondary factors as participation and past experiences in physical activities, and relationships between pupils and physical education teachers or friends, and (4) third factors as parent-child relationship, mental and physical health, environments for learning and physical activities. The questionnaires concerning these factors/ variables were administered to 743 fifth and sixth grade pupils. The path analyses applied to the data, revealed the assumed causal linkages among the factors. These results, namely, showed that the third factors influenced the secondary ones, secondary influenced primary, and eventually primary factors determined the achievement motivation for learning in physical education. In view of the results, it seemed that the EA model in this study was generally supported.