In this paper, the development process of Internetware software based on component composition is analyzed. A service-oriented component composition platform for Internetware (CCP-I) driven by workflow is designed, which can achieve dynamic assembly of service components and loose coupling between component and web form. Finally, the implementation scheme of CCP-I is introduced on the basis of those extended open source projects. CCP-I can provide reference for development of Internetware supporting platform in the open, dynamic and uncertain Internet.