The purpose of this study is to investigate the relationship between conformity and impulse purchasing behavior. Luo (2005) has presented that conformity would influence the impulse purchasing behavior, nevertheless, the relationship still remains unclear. Hence, it is necessary to investigate its relationship. This study analyzed the difference of their relationship by the LISREL model. The empirical evidences demonstrated that the consumer with higher conformity purchasing, the higher impulse purchasing behavior will be. The perceived results could not only modify the theory of impulse purchasing behavior, but also provide the possible marketing strategies for marketing managers.