According to ACNeilsen survey, the consumers in Taiwan have more brand awareness toward private label of retailers. In 2005, there had 87% consumers who went shopping in supermarkets or hypermarkets knew private label. Moreover, according to ITIS research which revealed the total amount of food private brand are 1,088 in Taiwan, and the average amount in hypermarket are 363, and second are convenience stores and supermarkets. However there is still huge gap between hypermarkets and convenience stores. Thus this situation reveals the potential market for private label of convenience stores. In 2008, 7-11 launched its own private brand 7-SELECT, and to differentiate from other low price position, 7-SELECT provide best price for the value. And it had great performance when it first time to market. Therefore this research will investigate the key success factor of 7-SELECT, and through four dimensions which are price, product and design, store image and promote and the intervening variable brand equity to explore purchase intention. According to data analysis, it is obvious that price, product and design, store image and promote affected purchase intention. This means a customer bought 7-SELECT may base on these factors. However brand equity did not have effect on purchase intention, the reasons could be it is still a new brand for one year, and its new product did not promote intensively, and the 7-SELECT layout can not attract customers¡¦ attention. Otherwise, the analysis outcome reveals there is not strong linkage between brand equity and 7-SELECT, and this result can provide the reference to retailers who develop their own private label.