In recent years, the acquisition of European companies with key technologies by foreign investors has caused widespread concern within the EU. This article starts with the cooperation mechanism and power distribution under the framework of screening foreign direct investment, and studies the relationship between the EU and member states. The implementation of the cooperation mechanism has also changed the distribution of power between the EU and the member states. On the one hand, the European Commission has begun to actively participate in foreign investment supervision, from legal provisions to actual actions. On the other hand, the foreign investment supervision power of member states has been divided but discretionary power increase. The impact of the new framework within the EU is mainly reflected in the changes in the relationship between the EU and its member states, and how each member state understands and specifically applies the framework is very important for third countries to invest in, especially China.