For forecasting, early warning and simulation of economic policy, this paper has established a multi-level-based distributed intelligent decision support for regional economic system, analysis of the laws governing the operation of regional economic system, trends and influencing factors. In the regional economy take full advantage of multi-level distributed intelligent decision support system to successfully assist the Government in policy-making departments to keep abreast of regional economic development of relevant information and provides the user the actual economic development and systems analysis of the evaluation index system derived, using scientific analysis model, and gives the best and reliable conclusious, at any time for decision-makers to provide efficient, timely, high-quality decision-making information, thereby enhancing the scientific nature of decision-making, and guide the healthy development of the regional economy.