1. The soundtrack helps to depict the scenery: music not only has strong lyricism, but also has a descriptive function. Making full use of music in corporate feature films can not only make the feature film move in silence, but also make the scenery sentimental and the scenes blend together to make it more touching.

2. The soundtrack helps to deepen the theme: The theme is the soul of corporate feature film production and plays a commanding and controlling role in the work. The theme is the idea of ??combining all aspects of the content and form of the work into a whole. At the same time, the corporate feature film is developed in the same visual and auditory perception. It can be seen that music is one of the important means of refining and expressing the theme.

3. The soundtrack helps to portray the image: music is the best at expressing people’s inner world and expressing rhythm. It can express the emotional and psychological state of the characters in the development process of conflicts. Generally, it does not focus on directly depicting the fact of the conflict itself, but expresses the psychological state of the characters in the development process of conflicts.

4. Soundtrack helps to stimulate associations: Due to its own characteristics, music is an important artistic means to stimulate people's associations. When we listen to music with a slow tempo and smooth melody and music with a fast and intense tempo and jumping melody, our psychological feelings and reactions are completely different. By linking the experience of language in life with the factors expressed in music, musical images are produced.

5. Soundtrack helps express emotions: Music is an emotional element, and its emotional generalization power is harder than any other image symbol. It is an important element to release the characters' emotions, a profound portrayal of the characters' inner emotions, and we mostly want to convey it to the audience through music.

6. The soundtrack helps to advance the plot: the driving force of the plot is conflict. Generally, the development of the plot in a movie is mainly accomplished by the actors' performances and lines. But music can sometimes be involved as a dramatic conflict factor. Usually, the development of the plot rhythm of corporate feature films relies on the selection and use of backgrounds, and the rhythm and speed of the picture are affected by the rhythm and ups and downs of music.