This study has tried the comparative analysis by classifying the underwear brand advertisement into direct sex appeal advertisement and metaphorical sex appeal advertisement. The effectiveness of advertisement expression has been studied by the comparative analysis for the advertisement attitude, the brand attitude, the purchasing intention based on the gender and the difference between design major and the others. As the study result, the conclusion, that the direct sex appeal advertisement on the characteristic of underwear brand has high effect on women, has been drawn. Also, it could be recognizable that men have high preference for the advertisement attitude, the brand attitude and the purchasing intention for the metaphorical sex appeal advertisement. Consequentially, the point that the effect on women can be maximized when the sex appeal expression is in harmony with the image of goods may be identified in case of the direct sex appeal advertisement in the underwear advertisement; it could be recognizable that men expressed their interests for metaphorical sex appeal expressions in underwear brand advertisements.