Discourse analysis is a general term for a number of approaches to analyze written, vocal, or sign language use for any significant semiotic event. It’s generally agreed that words are the beginning of human civilizations. What’s more, different peoples express things differently. In this situation, using discourse analysis under different cultures can make it easier for us to understand the things in different cultures.
However, compared with visual analysis, discourse analysis is not direct enough to catch the message. Visual analysis is a frame which helps us to understand artworks. In addition, visual analysis can base on shapes, colors and patterns to help people to understand the meaning of pictures. It is more intuitional for audience in understanding the real meaning of the picture.