The multimedia of computer system itself is the combination of multimedia technology with TV on demand, smart home appliances, identification network communication and other technologies, which makes multimedia technology enter the fields of education, consultation and entertainment. Enterprise management and office automation. It is the mutual penetration of multimedia technology and control technology, and has entered the field of industrial automation measurement and control.

So far, the application fields of multimedia have been involved in advertising, art, education, entertainment, engineering, medicine, business and scientific research.

Using multimedia web pages, businesses can turn advertisements into interactive forms with pictures, which can not only attract users, but also provide more product information to potential buyers. However, the long download time is one of the main disadvantages of using multimedia to make advertisements.

Using multimedia in teaching can not only increase the interactivity of self-study process, but also attract students to learn, improve their interest in learning and enhance their absorption of knowledge by using visual, auditory and tactile feedback.

Multimedia technology is a rapidly developing comprehensive electronic information technology, which has brought directional changes to traditional computer systems, audio and video equipment and will have a far-reaching impact on mass media. Multimedia computer will accelerate the process of computer entering all aspects of family and society, and bring profound revolution to people's work, life and entertainment.

Multimedia can also be used in digital libraries, digital museums and other fields. In addition, multimedia technology can also be used for traffic monitoring.