The principle of the relationship between content and form is one of the most basic principles in art analysis. It can help us understand the relationship between the internal logic and the form of expression of a work of art. The content of a work of art usually referred to the theme, emotions, and thoughts expressed in the work, while the form referred to the composition, lines, colors, font, and other elements of the work. The relationship between content and form is complementary. Together, they form the theme and meaning of a work of art. For example, in literature, the content of a work can be a story, a character, a plot, etc., and the form can be poetry, novels, essays, etc. Each genre has its own unique form and characteristics, which affects the reader's understanding and feelings of the work. In painting, the content of the work can be people, scenery, animals and other images, while the form can be lines, colors, composition and other elements. Each element has its own unique expression techniques and techniques, which affect the visual effect and emotional expression of the work. In music, the content of a work could be a song, a piece of music, an instrument, etc., and the form could be a melody, harmony, rhythm, etc. Each element had its own unique expression techniques and techniques, which affected the emotional expression of the work and the feelings of the audience. In movies and television, the content of a work could be a story, plot, character, etc., while the form could be a shot, a scene, special effects, etc. Each element had its own unique expression techniques and techniques, which affected the visual effects and emotional expression of the work. Therefore, through the use of the relationship between content and form, we can better understand the meaning and expression of works of art, so as to better appreciate and feel the emotions and thoughts they convey.