For the diversity of users demand for information services in converged network environment, a solution was proposed with the combination of cloud computing technology and domain engineering, in which three stages starting from the domain engineering include service-oriented domain analysis and modeling, domain architecture design based on cloud computing infrastructure and construction of service-oriented domain infrastructure. It will achieve the development, assembly and reuse of large-scale distributed information services in the domain by fully using cloud computing technology in the advantages of integration in the business.