The year 2017 is of great significance to the future of EU politics. It witnessed a wave of key elections in a number of European countries including Germany，France and the UK. Despite the political stability as a general picture across the European countries，it can be seen from the results of the elections that the influence of the populist parties is still on a rise，which has posed great challenges to the position of the traditional mainstream parties. In addition，the European governments are confronted with a number of other political and social difficulties. From the perspective of the European political integration，the variety of reform plans put on the agenda by the EU and its member states has achieved very limited progresses，and it remains to be seen where the EU is heading. However，initial achievements have been made in the field of European defence union，which is expected to become one of the breakthroughs in the future integration project.