The development of low-carbon economy is considered as a top-down economic transformation driven by policy. The realization of low-carbon economy is not simply been technical but policy-making methods need to be conducted in-depth research. This paper delivers a policy influence research method by constructing a regional low-carbon development model based on System Dynamics, and validates this model by comparing the simulation data and the Chinese calendar year statistics. Finally, some policy making suggestions based on the research are provided.