The purpose of this study was to analyze the kinematic and kinetic parameters of female fast pitch softball batting. Seven elite Taiwanese female fast pitch softball batters served as subjects. Two Redlake high-speed cameras (250Hz) were synchronized with a force platform (1000Hz)to record the hitting action. When bat speed achieved maximum, the mean moment of both thigh contributed about 32±9 (%) of total body moment. The trunk moment contributed 44±14 (%) of all. The vertical force of rear foot increased and was larger than forward foot in buffer phase. The batters shifted their weight from the rear toward the forward foot during swinging phase. At the moment of contacting ball the average vertical force of forward foot was three times larger than the rear foot. It was suggested that in order to generate maximal bat velocity, a hitter must have a strong trunk to generate rotation moment.