The language of English is manly classified into British English and American English.Britain is the birthplace of the language,and English has been bred and evolved significantly in this land.After a hundred years of evolution,American English has a full itinerary by its own national characteristics,and becomes an independent English model.In a large extent,it is different from British English.This paper analyzes the differences between British English and American English from the points of the growth and linguistic features of the language,so as to help people get more information about these two native languages,and thus,arouse their curiosity and creativity.I hope there will be more and more people enjoying the learning and using of English.