The purpose of this study was to provide the management skill of preventive instruction in elementary school classes. Management skill of preventive instruction with factor managerial time, manegerial episode, classroom-routine, efficient teaching of signal, overlapping, management games were composed. In order to raise the efficiency of teaching we have to use the overlapping, efficient teaching of signal, and have to prohibit of thrust, magnetization, dangling, flip - flpooing group gragmentation and overwelling. The short cut of management skill of preventive instruction in elementary school physical education is to diminish the managerial time and to provide plentifully the Academic Learning Time(ALT)