Recent years the development of SaaS industry is very well. And with the development and promotion of cloud computing, more and more people come to believe SaaS will become the future model of the software industry. But currently the SaaS application platform architecture and development framework are proprietary, lack of uniform standards, and the applications are difficult to flexibly custom and assemble. In view of this situation, in this paper describes a component-oriented SaaS integration framework based on OFBiz (the apache open for business project).