Abstract: This paper examines the directelection policy formulating process by City S’s Residential Committee in 2003 based on the empirical data from a case study. With the help of some valuable viewpoints and methods in the “BottomUp Model” in the policy implementation research and the conceptual instruments for organizational decisionmaking analysis， we have come to the following conclusions: Policy implementation is not only a continuous， dynamic process or a decisionmaking process by the agent， but also a power structure reconstruction process. Completely different from the static and unidirectional power relations in the bureaucratic structure based on role functions and rank positions， the power structure rebuilt through agent’s strategic interactions during the policy implementing process is a dynamic and multidirectional one. The successful execution of the direct election of the Residential Committee in the context of conflicting systems was a product of the reconstructed power relations during the policy implementing process.

Key words: agent, policy implementation, power, power relations, strategic action