In the face of globalization, the restaurant industry has to quickly develop chain stores that feature delicious food, rapid service, and uniqueness in order to create advantages in this traditional industry. Because of the highly labor-intensive nature of restaurant chain stores and the ever-increasing demand on high quality services from consumers for convenience and time efficiency in the competitive environment, integrating modern management concepts with a variety of information technologies to enhance the efficiency and competitiveness of the restaurant has become winning tools for businesses. This research includes several main portions. First, we use the Formosa Chang as a case to analyze the competitive situation of restaurant chain stores, including the five forces analysis, SWOT, and critical success factors for restaurant chain stores to form the four management strategies of the case study company for store expansion, marketing, products, and service. Then, the E-business status of the chain store and its upstream and downstream E-business status are investigated. Finally, the mechanism for deployment the system is reported, which includes system investigation to confirm organizational preparations and resources allotment and determine the priorities in the development of the E-business system. This is followed by system analysis, system design, system hardware and software configuration and installment. Finally, the performance of the system is evaluated. Analysis of the key performance indicators (KPI) of the case study company shows high effectiveness of e-business in improving and simplifying its operational procedures.