The aims of this study were to identify the effects on sexual role identity and sexual attitude of the A-V programed sexual education on Oct. 1. 1997 through Sep. 30, 2000. The program was focused on the formation of the desirable sexual activity, attitude and androgyny sexual role identity of the Korean adolescents, and that was the 25 minute VTR media "Our sexuality is healthful". This study was non equivalent post-test only quasi-experimental design, and the subjects were 530 middle school boys in Busan, Korea. After the manipulation, the change of sexual role identity and sexual attitude was analysed. Outcome measures were middle school boys' sexual role identity toward KSRI on a seven-point Likert scale and sexual attitudes toward SAS on a five-point Likert scale. The data was analysed by SPSS WIN. The results were summarized as follows: 1) The experimental group who was exposed to the A-V media produced by the author showed the higher score of androgyny sexual role identity than the control group who didn't watch the A-V program. 2) The experimental group showed the higher rate of the androgyny than the control group, On the other hand, their rate of the masculinity turned out to be lower than the latter group. 3) The experimental group didn't show the difference of SAS score from the control group. In conclusion, "Our sexuality is Healthful" A-V program for sexual education brought about the significant change of sexual role identity of the middle school boys, but didn't affect their attitude toward sexual activity.