The purpose of this study is to discuss the beginning of "tai". The historical methods of investigation and survey were used in this study . We also worked hard to collect all relative data. After sorting out and analysing the data, we could clearly figure out the beinging in "tai". The author got the following results: The word "tai" that we could find first was in the paper "tai book". This paper was written by wang tzong-yueh in qing dynasty. Because the paper was written long time ago, we are not clear what was the man that created the "tai".