Whether the management strategy that an enterprise takes is appropriate or not will have an important impact on success or failure of business administration. And designing an appropriate management accounting system to assist business administration also cannot be neglected. What is the relationship between management strategy and management accounting systems? According to the empirical research findings before that through surveying of excellent American and Japanese firms, management accounting systems should be consistent with the direction of strategy, and assist the implementation of how the strategy impacts the design and choice of management accounting systems, are lack of reasonable explanations. Through a case study of successful Taiwanese enterprise - Acer, this study introduces the idea of a component of management strategy - accumulation of information resources to investigate the relationship of strategy (i.e. what a kind of information resources that a firm would want to accumulate) and management accounting systems, and try to provide a reasonable explanation about why and how the strategy impacts the design and choice of management accounting systems. Based on a case study of Acer (the research discussed in this paper), the results indicate that through the introduction of the idea of accumulating information resources, can provide a reasonable explanation to the relationship between strategy and the firm's use of management accounting systems. That is, according to a firm's strategy, the focused content of information resources that the firm wants to accumulate may differ among firms, and the process and method of accumulation will also be different, so it will influence information systems that concerning the collection and accumulation of information - management accounting systems. The results also illustrate management accounting systems tend to promote the accumulation of information resources.