This study is on sexual-harassment victimizations in public transports of the woman students(N=501) of D university in Busan, S. Korea, through a victim survey. Sample was selected with quota sampling by the distribution of departments. This data was analyzed with logistic regression technique on binary response, using SAS and SPSS. All hypotheses were inferred from lifestyle theory and routine activity theory and these hypotheses were divided into the proximity and expose with criminals, target attractiveness, and the absence of guardianships. Analysis on this data shows that these three factors, related with rational choice perspective, have some significant effects on sexual harassment victimization in public transports, but their effects is very differential in their effect sizes. Some variables of the proximity and expose with criminals and some variables of the absence of guardianships have only a small effects on sexual harassment victimization. But mainly wearing a showy and sexy dress, which is a variable of target attractiveness in sexual-harassment victimization, has a strong effect on sexual harassment victimization. Also, mainly wearing a showy and sexy dress has a stronger effect on serious sexual harassment victimizations(such as a sexual contact or grouping) than mild sexual harassment victimizations(such as a verbal harassment, a leaning, a picturing a part of body, and etc..)