Idioms are the essence of language and the most important tool in human’s communication. This paper aims to conduct a comparative study of affective idioms between China and English. A study of affective idioms can break new ground in the exploration of idioms. In addition, through there are differences in various respects, people from distinctive nations can communicate well with each other. It shows that there are intercommunication and translatability among different Languages. Thus, making a comparative study of English and Chinese Idioms is significant to the development of comparative Linguistic study and the smooth progress of idiomatic translation.