According to the needs of senior middle school teachers of English,the author has designed and implemented a training activity through a classroom teaching case in order to explore how to improve teacher training.

An observation of CSL classroom teaching video is an effective means of,and by comparison,plays an irreplaceable role in cultivating MTCSL.

The article makes an in-depth discussion on how to shoot videos for in-class medicine teaching to improve their quality in the following aspects: shooting staff active participation in research on teaching methodology,designing pictures properly,teachers images,presentation capability of camera lens,teaching courseware and cooperation with each other.

Based on this,this study explores its connotation and characteristic,dimension of analysis and procedure of the videotape classroom study,and introduces its encoding analysis approach by using facts.