It has been 17 years since Korea and China started the diplomatic relationship. In the 17 years, china has become the largest economic partner and the largest investment destination of Korea. Since both countries endorsed the Treaty of Vienna, how to apply the appropriate law is really an issue. What need to be done is to find the differences between Korean civil law and Chinese contract law for any potential problem that will happened in international contract establishment between the two countries. This study concerns about the analysis on how to finalize a contract and resolve an issue in Korean civil law and Chinese contract law as below: First, in chapter 1, I have described my study intention and method. Second, I start my comparative study on chapter 2 which has focused on the history and development process of Korean Civil Law and the contract establishment terms. And then I exemplify some judical precedent which I derived from Seoul Supreme Court to prove my understanding of Korean Civil Law's contract establishment terms . Third, in chapter 3, I describe the history and development process of Chinese Uniform Contract Law and the contract establishment terms. In this part, I emphasize on the terms which are different from Korean Civil Law's contract establishment terms. Forth, I made some comparative study on Chinese and Korean contract establishment terms, and illustrate some comparative tabulations which can be seen conventionally in offer. accept. contract avoidance. contract cancellation and contract modification. If we can get a really understanding on the differences between Korean civil law and Chinese contract law’s establishment course which we mentioned, it would not only help lots of companies which have plans to do business with China to sign a appropriate contracts, but also help them to win the law sue cases.