Documentary picture and sound changes from film to digital TV is the medium of the mode of transmission of the shape of the sound and picture reproduction art forms and reflect the life of a screen, as one of the carriers of the human culture, the important mission of the documentary is to efforts to all forms of culture, cultural content image expressed However, in the traditional history class theme documentary oral plus pictures of a single narrative, if you remove the language only historical, architectural and landscape photos These images are actually just as sound simple vassal state of basic "aphasia" scene reconstruction "the use of an effective channel to break this state, it is in its own image in the Context documentary The images have a separate language status, enhanced expression of the film's images, the documentary also be able to adhere to "let the picture speak" in the face of historical and cultural themes.