Good interaction between the teacher and students in class is crucial for giving a good lesson. Only the teacher and students could well interact with each other than teaching quality could be better promoted. In this paper, literature consultation, mathematical analysis, questionnaire survey etc. are applied to study on teacher-student interactive behaviors in sports class at Chengdu municipal experimental primary school. Results indicated that there are four types of teacher-student interaction at Chengdu municipal experimental primary school, from which group interaction between the teacher and students were most frequent. Investigation finds that problems in interaction of the school were formalized class, ineffectiveness and unequal interaction. Whereas main influence factors of interactive behaviors cover teacher factor, student factor, teaching contents, teaching media, teaching environment etc., from which teach factor is the main part. Moreover, it acquired some promotion strategies to improve present situation that provided evidence for better interaction between the teacher and students in sports class.