Experience accumulation and reuse are very important for manufacturing of complex product. However, there is no mechanism to support such function in the integrated manufacturing system based on semantic SOA which is generally accepted as an effective approach to raise productivity. Specific to this problem, we propose a solution by building a case-base in semantic SOA to improve the traditional framework, in which case-base can accumulates the experiences by case study and reuse them by case retrieve. In this paper, the new architecture and workflow of the semantic SOA with build-in case-base is designed, merging and maximizing the advantages of both case-base and SOA to make up the lack of experience accumulation and reuse mechanism. Then, combined with field characteristics of complex products’ manufacturing process, construction and implementation concerning key technologies and methods of case-base are comprehensively elaborated.