Borrowing the concept of "political culture" from political science, drawing nourishment from anthropology, sociology, and other related disciplines, and inspired by social history, cultural history, transnational history, and other academic trends, American historians gradually transformed the field of political history and developed historical research on political culture with corresponding methodologies. Particularly, they explicitly defined the position and significance of culture and psychology in the political world. Thus, historians incorporated irrational factors into political history and enhanced their senses and skills of contextualism. Moreover, they explored interpretive approaches along with causation models. On this basis, American political historians probed elite political culture, mass political culture, and political subcultures, and discovered new research topics by integrating new cultural history, transnational history, and emotional history. The strengths and weaknesses of historical studies of American political culture in the United States may provide inspirations for Chinese scholars to rethink and promote historical research on political culture in China.