From the perspective on the geographic politics and energy issue, Black Sea is now a "hot zone" for the energy policy of European Union. After the EU enlargement, Black Sea is now the border between EU and Russia. Otherwise, energy deliveries also must pass through Black Sea. The crisis of Ukraine in the past few years was also because the geographic and energy issue. This paper tries to discuss the regional integration and the energy security policy in the Black Sea region. This paper will also focus on the EU’s energy policy in Black Sea.