It is the common advertising tactics that Idol is spoken for the product. That is for attracting consumers to purchase products by the fame of idols in all works of life.The marketing tactics for advertising is to create spectacle by the idolatry of consumer but does not focus on functions of products. First of all, the study would be aimed at behaviors that Fans admiring idols. Two factors, sensitivity and rationality, had effected on how fans consume. Secondly, we would prove that Addition directly made fans blind-idolatry without the formation of their attitude. According to the result of this study, we cited conclusion and suggestion for latter studies. We discussed about the existence of addition from the perspective of marketing and found the factors, which fans irresistibly admired to idols, for lasting consuming. By these factors, fans became more loyal to idols and bought icon-products without thinking. This study reveals Addition is worth further discussion.