Abstract: As to the time when the word “yi xue” emerged, scholars have had different opinions. This paper points out that it emerged at least before the Sui and Tang dynasties. During the sixth century or the period of Southern and Northern dynasties it was coined and used in translations of Buddhist scriptures. In ancient times the term had a meaning of translation learning, and sometimes it was referred to an official translation institution or an official post as a translator.

Key words: yi xue , learning of translation , translator , origin