There are many contents for Korean’s “Little China” thoughts but its core ideas are basically stable.The words of “Little China” came out from Buddhism in the Unified Silla period，its contend gradually enriched and became popular during Song and Koryo periods.Jizi as one of the Chinese Confucian sages in the end of Shang dynasty had been regarded as the beginner of the “Little China” thought，who led the Korean from the “Yi”（barbarian） world to the “Hua”（civilized） world.Choson dynasty as the most typical vassal state of Ming Dynasty，studied and copied the political system，Confucian thoughts and even the daily life habits from Ming so the idea “Mohua”（admiring China） had become the core idea of “Little China” thought.However，Choson regarded the Qing dynasty as barbarian rather than Chinese，then，“honoring king to reject exterminate” had been the core idea of the “Little China” thought discussed completely by Song Shi-ye.We can grasp the change of the history of Sino-Korea relationship through the evaluation of Korean “Little China” thought.