After the burst of internet bubbles in 2000, the proprietors of online stores began to run their business like physical ones. They adopted the strategy circumspectly to have a solid foundation for their brands. Since the contents and promotions of the website were easy to be copied, the proprietors of online stores need to strengthen their brand awareness and brand preference to customers if they want to be the leader on the market. Most of the online stores only promote their products and service online now, and their strategies are not as diverse or fancy as physical stores have. Besides, most of the researches work on information system design of the website by now. There are not only a few case study on the internet makeup and skin care product stores, but also no research of online brand strategy step model. Through using multiple case study method, this research discusses the practicable marketing strategy what the cases of this study have done. Moreover, this research also goes through the conceptions of online brand strategy, e-commerce, and internet marketing strategy to build the conceptual model to analyze the marketing strategy what the three cases have adopted for this study. In the end, this research has build one practicable brand strategy step model for successful online stores in Taiwan. The result shows that the first step of building a successful online store is to perfect your own website. Then, expand your ambits to other commercial website. After that, an online store can be known by customers without continuing the third step. But if you can follow-up, that will strengthen the brand awareness and brand preference. The third step can be working the virtual community or marketing offline. There is no priority between these two stages, and you can also adopt both on the same time. That would be no difference.