Abstract: In his masterpiece The Leatherstocking Tales,James Fenimore Cooper recorded the complicated contradictions and conflicts in the northern American colonization,which exploited a broad field of native topics in American literature history.This thesis has analyzed the epic picture of the U.S.frontier development,the history of colonial struggling and decline and fall of American Indians.

Key words: Leatherstocking Tales, James Fenimore Cooper, frontier development, colonial struggling, decline and fall of Indians