This study is to examine what role is played on formation of brand attitude and brand attachment by the 3 types of brand experiences (rational experience, emotional experience and relate experience) undergone through an on-line brand community site. Also, the study aims to have a positive investigation on what influence is given to brand commitment by the brand attitude and the brand attachment formed through brand experience. The study result reveals that rational experience gives influence rather to brand attitude than brand attachment. On the other hand, it shows that emotional experience gives meaningful influence rather to brand attachment than brand attitude. It also shows that relate experience gives stronger influence to brand attachment than brand attitude. Next, a positive analysis is conducted to find out what difference of influence the brand commitment gives to brand attitude and brand attachment formed through brand experience. The analysis result shows that brand attitude does not give affect to brand commitment but brand attachment gives affect to brand commitment.