A study on the analytic method of documentary image - centering on the Television documentary "Nakdong Gang" - The far - reaching influence of visual communication media can be considered as one of the most important factors among modern cultural phenomena at the time of incoming 21st century. Television documentary has its own distinctive meanings among visual communication media which have broad influence. The purpose of this thesis is to study analytic method of documentary image. In order to achieve this purpose, television documentary "Nakdong Gang" which was broadcasted by Daegu MBC from 18:40 to 19:30 Jan. 1st in 1996 was chosen as a analysis text To examine the intrinsic nature and characteristic of image as a visual language this thesis have 2 issues as follows. Subject 1: What kinds of elements is the image expression of television documentary "Nakdong Gang" composed? Subject 2: What is the function of image and how is the image expressed? It is based on not by sensuous theory but by perceptual theory. Color, shape, composition and movement were chosen as analytic factors. Every image is made by light. Without light, no image can exist. Light is perceived as color and color reflects reality because shadows also have their colors. And these factors can be perceived by our eyes in the form of point, line and plane. Perceived image is expressed by a composition. The intention and meaning of cameraman can be exposed from this point and the cameraman uses movement to enhance the effect of visual image. This thesis analysed image components to understand the characteristic of TV image, one of the most important mass media. The essential object of this study is to find the meaning of image. That is to speak, every image uses multi-meaning image language to achieve successful communication. Most people think it is very difficult to analyse images because it is perceived naturally. However, We can understand the intrinsic meaning of image expression by finding some rules in the images. This researcher started this thesis with a critical mind about what function expressed image factors have, to analyse image documentary and tried to find out 4 factors to suggest the possibility of image analysis in the Subject 1. The function of 4 factors to analyse image documentary in the Subject 2. This study suggested the possibility to find the meaning of multi-meaned image.