The objects of the study were 84 junior college female students of Wu- Feng Junior College. We divided them into self-observing, others-observing, synthetic-observing and control group different motion observation groups. The training period was two hours a week for six weeks badminton forehand overhead clear experimental training. All groups had to take pretest and protest for this training. Moreover, after two weeks of protest, they need to take retention test again. all the data were used in discussion about their learning effect and retention effect in order to compare their difference. The final conclusions of this study are as follows: 1. The learning effect of the forehand overhead clear of the others-observing group and the synthetic-observing group was better than that of the control group. (P<.05) 2. After taking a two-week break, the forehand overhead clear of the synthetic-observing group and control group were in reminiscence, the others had good retention effect. 3. After taking a two-week break, the retention effect of the forehand overhead clear skill of the self-observing group and the synthetic-observing group was better than that of the others-observing group. (P<.05)