The purposes of this study were to explain consumer attitude and purchasing behavior of the organic food and the genetically modified food and to find some influencing factors such as food related personality traits(food involvement, food noephobia), emotion(positive, negative) and individual characteristics on them. The results of this study were as follows: 1) consumer attitude was found to be significantly influenced by positive emotions for the organic food and the genetically modified food, and age, marital status and income for the genetically modified food. 2) food purchasing frequency was found to be significantly influenced by consumer attitude for the organic food and the genetically modified food, and food involvement for the genetically modified food. 3) finally, this study found that the organic food and the genetically modified food were correlated with respect to consumption emotion, attitude and purchasing behavior, and thus, the consumer response for both food should not be considered separately.