The purpose of this study was to investigate the effects of Internet shopping interests on the casual relationships among Internet shopping mall attributes, emotions, and impulse buying behavior. Data were obtained from 414 internet shoppers who had bought fashion products in internet shopping mall. The result showed that the highly interested Internet shoppers, when perceived the product attributes of Internet shopping mall, were more likely to feel positive emotions, and then were more likely to buy fashion products impulsively in Internet shopping. The less perceived the convenience of checkout & trust in Internet, the more negative emotions they had. However, the less interested Internet shoppers were more likely to buy impulsively fashion products with positive emotions when they perceived various product assortments, and were negatively influenced by the high speed of loading and promotions of Internet shopping mall. The findings provide implications of impulse buying behavior in Internet shopping malls for fashion products.