The aims of this study is discuss the effects of different KP on two-handed backhand skill. The subjects are 100 college female students (average 156.8±5.78 cm in height, 49.8±10.23 kg in weight, 19.2±2.35 years in age) of TWCAT that majored the tennis class and never accepted the training about it. They assigned to the control group, spoken language group, self image group and standard image group, to carry out 1 hr the tennis teaching for 8 days, and used the DV to capture the image in the pre-test、post-test and retention. After it's all, the 3 tennis coaches make a grade for each one. This study took dual-factor mix design and comparision was made for any simple main effect or interaction having reached its significant level. This study set the significant level for all assumed tests at .05. The conclusions as following: 1.the standard-image group has great effect than the others in post-test. 2.the standard-image group has great effect than the others in the retention test.
