The study is about a legacy system in an industrial company of footwear manufacturing. While the bases of enterprise operations expand, it will cause the data distributed and hard to get the know-how easily. In further, the legacy system will make business managers hard to obtain the integrated information for decision-making reference. Based on the legacy system as an initial system, it is modified into a newly developed system by following each enterprise’s requirement. The architecture is based on Web-Based and centralized database and developed to an internal ERP system. By comparing both the old and the new systems, the new system increases the information accuracy in real-time. Particularly on system integration and data inquiry, the new system is superior to the old system to a great extent.