欧盟在长期的竞争法实践中，创立并完善了相关市场理论。它是欧盟竞争法的重要组成部分，某种程度上说它是整个竞争法适用的理论基础。它有着客观、科学、合理、系统等特点，在竞争法实践中发挥着重要的作用。在今天我国与欧盟经贸往来日益频繁、合作与竞争不断加强的新形... The EU has established and perfected relevant market theories in its long-standing competition law practice. It is an important part of EU competition law and to some extent it is the theoretical basis to which the competition law applies. It has the characteristics of being objective, scientific, reasonable and systematic and plays an important role in the competition law practice. Today, the economic and trade exchanges between our country and the EU are becoming more frequent, and new forms of cooperation and competition are constantly being strengthened.