Background: Multimedia information processing technology is an important part in the field of computer information processing, as described in various patents.Method: In order to solve the problems existing in different methods in this field, this paper focused on image processing, audio processing, video processing, 3D animation technology and other information processing technology and the application of the technology’s frontier approach to make a detailed theoretical analysis and describe their application. The principle and the prospect of the application and the existing problems were also analyzed. The validity of the proposed viewpoint was proved by experiments. Result: Improved algorithm significantly increased the quantity of processed information and processing efficiency, and reduced the error rate. Conclusion: Through the summary of multimedia information processing technology, an effective basis for the related research is provided.