Chinese economy has been rapidly growing more than 10% every year since the reform and market opening of the year 1979. The amount of import and export in 2008 totalled 2 trillion and 555.9 billion dollars up 18% from last year and trade surplus recorded 297.4 billion dollars. Processing and manufacturing industries take big portions of the Chinese import and export and China ranks 3rd in the world trade. In terms of trade, Korea is the 4th largest counterpart to China and China is the largest one to Korea. As China is recognized as an emerging market and trade with Korea keeps growing, relations between the two countries such as economic, cultural and non-governmental interchange will strengthen. China and Korea are geographically close and origins of Oriental civilization. Geographical convenience and cultural similarity were sound bases in developing trade to the two countries. Trade volume was insignificant and mostly indirect way but since the diplomatic tie between the two countries in 1992, trade increased dramatically and converted to direct dealings. From 1992 and 1997, the annual amount of trade increased from 6.8 billion to 28.8 billions dollars by 27.3% on average each year. As China joined the WTO in 2002, it began to lower tariffs and broaden its market opening. As Korea increased investment into China, trade volume surpassed 10 billion dollars and structure of commodities in trade has been advanced to high-tech industry. Korean-Chinese trade has been stable since the 2nd half of 2005. Abruptly rising trends in trade between the two countries slowed, whereas it indicates that Korean-Chinese trade enters into a new stage. While export inducement coefficient was decreased by Korean businesses advanced into China and production of intermediate goods of China created import substitution effect, such a sudden rise in export to China doesn't seem sustainable. In the middle of fast-growing trade, imbalance is also deepening. China's deficit in trade with Korea is worsening. Chinese exports are mostly low value products. Agricultural products show a typical example that Chinese commodities are more impacted in the same industry when competing with the counterpart in Korea. Such a industry has a higher frequency of trade disputes. Garlic and Kimch issues each in 2000 and 2004 and others wreaked havoc on related industries of both countries. Korea runs excessive trade surplus with China and has a high dependency on Chinese economy. A high dependence on foreign markets can't ignore latent risk factors. For a sound and continuous Korean-Chinese trade, it's important to analyse the current state, characteristics of each phase in developments and imbalance in scale and structure of Korean-Chinese trade, and understand the problems and search for improvements. This paper will focus on imbalance in Korean-Chinese trade and analyse such phenomenons and causes and finally seek for improvements.