A method of applying life cycle theory into the control and management on thermal power project construction domain was proposed to fit the strong complexity and particularity in the construction process. An integrated control conceptual model on thermal power project construction was established which consists of quality, schedule, investment and safety. And the organization mode of integrated control was set up. Then, the integrated control flow was illustrated in detail. Finally, an information management platform on thermal power project was built up based on life cycle theory. The application result shows that the theory and the platform provide an effective technical support for the construction and management of the thermal power project.