China，Japan and South Korea are important economies and energy consumers in the world. In 2012，China’s primary energy consumption is 4 times more than the total of Japan and South Korea’s. In China’ energy consumption，coal accounts for nearly 70%. Japan and South Korea’s energy consumption mainly consist of oil，coal and gas. In terms of sectors，industry occupies the main status in the three countries. However，citizen，business and transportation account for more than 50% in Japan. In Korea，these two sectors account for nearly 40%. But in China，it is less than 20%. As is well known，the three countries all heavily depend on overseas energy supply. The Middle East is the strategically important origin for three countries. During the last two years，Abe administration in Japan strongly put emphasis on the Middle East and Africa. Gas from Southeast Asia is also very important to both Japan and Korea. Compared with China and Japan，Korea plays a unique role in nuclear development. Although China has made achievements in saving energy，there is still a big challenge. In the future，the main task for three countries is how to defense the instability of international energy market. With U.S. rebalancing strategy，China，Japan and Korea should seriously discuss the cooperation issues among them.