Abstract: To record the AntiJapanese War of China，acquire more understanding and support from the West，and inspire people participating in the world antifascist struggles are the intentions of The 400 Million produced by Joris Ivens，the great master of documentary.Forming a national identity is an important way for this purpose.Through the analysis of the world wartime documentary，s characters and roles and the visual expression and symbol of the film，this paper notes that the producer formed a national identity with worldwide significance，that is，the forming process of Chinese national identity is also the forming process of the awareness to resist oppression and fight for independence and freedom of people joining the world antifascist struggles，just via the special ritual visual language of the film and ritual activity of seeing a film in context of war and revolution.