Using the 「Sex-Related Knowledge and Attitudes of Junior College and Secondary School Students」 survey in 1995 by 「Taiwan Provincial Institute of Family Planning」, we analyze the effect of teenager pornography viewing on their sexual behavior and willingness to have further education, respectively. The Two Stage Least Square shows that the probability of teenagers having intercourse increased if they have had viewed pornography before. But the suxual behavior doesn't have substantial effect on their willingness for further education.