Idioms is a special culture which is shaped in the daily lives of the local people, particularly the idioms of diet has a close relation with various elements, such as the eating custom, history, fairy tales, geographic situations. Also, different ways of translation on different diet idioms in English and Chinese will be analyzed in this article. As a result, it will be very important to know the great culture contents in the idioms of diet in order to do a better job in the research of cross-culture communication and the translation.