1 Northern Europe: the definition of what we call the Nordic region in the political sense, mainly including five countries, namely: Sweden, Finland, Denmark, Norway and Iceland。Window of the Nordic countries called the "welfare state" and "the social laboratory" in the western world, so we speak today "northern European country, welfare system" is mainly about the five countries of the welfare state system, due to the five countries of the welfare state system is very similar, so we will put them as a whole.2 The definition of the welfare state: the so-called welfare state is established by the national legislation and perfect social security system. In the modern sense of the Nordic welfare state was established after world war ii.3 Nordic welfare state: the development of the post-war is a Nordic welfare state in the early 70 s, during the great development of the northern European economy has spent the recovery stage, entered into a high-speed development period. High-speed economic growth for the perfection of the welfare state provides a solid material foundation, and the Nordic countries during this period on the basis of the original welfare system constantly to enrich and expand in the content, form is called social democracy system of welfare model. Since the mid - 70 - s, under the oil crisis of a few, the Nordic countries have suffered serious economic crisis, in the "stagflation" (high inflation and high unemployment and low growth). Economic crisis and caused a crisis of "welfare state", to the development of economic, social and political brought serious consequences.4 Nordic welfare system formed an enviable "Nordic model" the Nordic model: labor productivity is significantly higher than other countries "from cradle to grave" social security for national income and wealth distribution no disparity phenomenon world competitiveness ranks the top 10 highest incorruptibility government。