Hồ Chí Minh’s nationalist ideology and nationalism have so far been a major topic that continues to be discussed but has yet to reach a consensus among historical and political researchers. Some researchers argue that in Hồ Chí Minh’s thought, there was only patriotism, not nationalism. Others asserted that Hồ Chí Minh’s patriotism was the foundation and starting point for him to absorb proletarian internationalism. Based on historical events and analyses of the political and ideological changes of Nguyễn Ái Quốc (Hồ Chí Minh1) through his publications and revolutionary activities in the 1920s, the article focuses on clarifying the process of forming and perfecting Hồ Chí Minh’s nationalist ideology to step by step establish Hồ Chí Minh’s nationalist line, which was reflected in the First Revolutionary Platform at the beginning of 1930 and was reaffirmed in the Eighth Conference of the Communist Party of Vietnam’s Central Committee in May 1941.