In the history of English and American literature, Romantic Period is so important that cannot be ignored by people. A lot of good writers appeared and their famous works (especially in the field of poetry and prose) were produced. Though many differences between Great Britain and America exist, and the thoughts of writers between the two countries are so different, they have some common senses of Romanticism. This should not be forgotten. In order to point out this problem deeply, we have to pay an attention to the history background of the two countries, to the author’s biography and to the works of them completely. Some important writers such as Wordsworth and Emerson are discussed detailed in the paper.