欧元启动后 ,欧元区成员国的货币政策已由欧洲中央银行制定 ,各国仅拥有财政政策的制定权 ,这对传统经济学中一种货币政策与一种财政政策进行搭配实现经济目标的分析提出了挑战。目前 ,欧盟经济增长缓慢 ,《稳定与增长公约》涉及相关指标的可行性受到怀疑。究竟在欧洲经济货币联盟阶段 ,各成员国之间是否需要进行财政政策协调 ,以及财政政策协调的经济效应如何 ,本文运用理论和数理模型进行了比较深入的分析 ,指出了财政政策协调有利于欧盟整体福利的提高 ,有利于欧盟经济的良好运行 ,有利于欧盟经济长期稳定的发展。 After the start of the euro, the monetary policy of the member states of the euro zone has been formulated by the European Central Bank. All countries have only the right to formulate fiscal policies. This analyzes the combination of a monetary policy and a fiscal policy in the traditional economics to achieve economic goals The challenge. At present, the economic growth in the European Union is sluggish and the stability of the Stability Pact and the feasibility of the relevant indicators are under suspicion. In the stage of European economic and monetary union, whether the member states need to coordinate the fiscal policy and how the economic effect of the fiscal policy coordination is. This article uses the theory and the mathematical model to conduct a more in-depth analysis, points out that the fiscal policy coordination is beneficial to the EU as a whole The improvement of welfare is conducive to the good operation of the EU economy and to the long-term and steady development of the EU economy.