1946 10 served as the deputy director of the Department of History and Geography of North China United University. He attached great importance to the study of practical problems, opened a new course of "China's Diplomatic History" at 1947, and published works such as "History of British and American Imperialists' Invasion of China since Japan's Surrender" and "A History of China's Political Situation since Japan's Surrender" (editor-in-chief). After 1949, Hu Hua mainly devoted himself to the study of China's revolutionary history. 1950 to the early 1960s, he successively served as deputy director of the China Revolutionary History Teaching and Research Section of Renmin University of China, director of the China Party History Teaching and Research Section, and director of the China Party History Department. After the Lin Biao incident, 1972 returned to Beijing from Jiangxi May 7th Cadre School as a consultant of the Chinese Revolution Museum. 1978 After the resumption of China Renmin University, he served as the director of the Department of Party History of China Renmin University, honorary director, doctoral supervisor, member of the Central Party History Information Collection Committee, member of the Discipline Appraisal Group of the State Council Academic Degrees Committee, convener of the Political Science Group, executive director of the China Historical Society, member of the History Editorial Committee of the Encyclopedia of China, member of the Scientific Socialism Editorial Committee, and editor-in-chief of "Socialism in China Volume". Hu Hua initiated and organized the "China Society for the Study of Party History Characters", served as the executive vice president (president is He Changgong), and edited a large-scale series "Biography of Party History Characters in China" (50 volumes), which was translated into many languages or reprinted and published directly abroad, with great influence; He also participated in the establishment of the National Party History Research Association (later renamed China Party History Society) as the executive vice president. Hu Hua died in Shanghai.