Chinese quadrisyllabic phrases are indispensable in English-Chinese translation. It can be said that their existence is one distinct feature of Chinese. Without them the translated text can never be concise, vivid and fluent. Only those translators who have an excellent foundation in Chinese can make good use of them freely. So, in order to improve the quality of the translated Chinese text, it is quite necessary to highlight the main functions of Chinese quadrisyllabic phrases. This thesis covers three main benefits that quadrisyllabic phrases can bring in English-Chinese translation, with a lot of examples. It can be said that their existence is one distinct feature of Chinese. Without them the translated text can never be concise, vivid and fluent. Only those translators who have an excellent foundation in Chinese can so, in order to improve the quality of the translated Chinese text, it is quite necessary to highlight the main functions of them freely. So, in order to improve the quality of the translation Chinese text, it is quite necessary to highlight the main functions of Chinese quadrisyllabic phrases. translation, with a lot of examples.