This research is to explore the effects on golf swing skills after being fed back with knowledge of performance through computer software aided gold instruction. 143 students of I-Shou University, who opted for Golf Program, are targeted for test. Subjects of different classes were divided into two groups: Control Group (KP) and Experiment Group (KP Group + Computer Software Aided Instruction). Immediate after completing 16-week practices, they were placed under test of golf padding skills. The manipulated independent variables are gender and different knowledge of performance, and the dependent variables are scores of distance and accuracy of swing. T-test is employed to examine the effects on swing performance with knowledge of performance of different skills. The findings are: (1) For male students, when they were given to know the performance through computer software aided instruction, the distance has shown improvement, but not to female students. It may be that male students are generally with better muscle strength. (2) For female students, after being fed with the knowledge of performance through computer software aided instruction, they have improved accuracy of swing. This is not the case for male students. This may be that female students are generally with weaker overall strength and lead to better accuracy.