Guo Shengming was a renowned Chinese historian in the 20^th century, whose research fields are extensive and publications abundant. Guo’s writing of American history began with his translation of the influential Ten Days That Shook the World in the 1930s. His translation of the “Declaration of Independence” into modern Chinese in the 1950s has been celebrated for its accuracy and completeness. By writing popular books, textbooks and academic works on American history, Guo integrated his attention to and sympathy for people at the bottom and marginalized social groups into his writing of American history, demonstrating his view that historical writing should be oriented to the public and promote civic education and social progress. Together with a group of outstanding scholars, Guo made important contributions not only to China’s research on American history, but also to that on world history and global history.