In 2004, Lu Feihua focused ont he functional features and language style of public signs in his paper“Chinese-English Translation of Public Signs”（Lv 38-40）

     Since 2008, much study has been carried out on the C-E translation of public signs in light of theoretical or academic underpinning. For example, Cai Gaiying attempts to discuss public signs from the perspective of rhetoric of discourse act （Cai 36-40），Yang Yonghe from the perspective of pragmatics（Yang 113-116）,Fan Guihua from the perspective of intertextuality(Fan 47-50), Pi Deming from the perspective of translation principles(Pi 131-134), Liu Jian from the perspective of communicative translation theory(Liu 131-134), etc.

     In general, the scholars previous study has laid a solid foundation for the present study. And it’s necessary to point out that few scholars have analyzed C-E theory. In this thesis, some ignored mistakes in Chinese-English translation of public signs will be picked out and the author will give a detailed analysis on the errors from different levels.