Flash动画具有文件体积小,图像质量好,采用“流”式播放方式,兼容性好,具有强大的动作脚本功能,能将图像、声音、视频等多媒体作品进行整合的特点,目前在课件中得到广泛应用.文章主要通过一个实例——简谐振动,利用Flash制作课件来突破教学难点,阐述了Flash课件的应用以及在应用中要注意的问题.“,”Flash animation file has the features of small volume, good image quality, using“flow”type of playback mode, good compatibility, strong action script function, can integrate image, sound, video and other multimedia works, has been widely applied in present courseware. In this paper, through an example of simple harmonic vibration--using Flash courseware to break through the difficult points in teaching, expounds the application of Flash courseware and the problems that should be paid attention to in the application.