Multimedia technology and network technology have been rapidly developed. Embedded Micro Processor Unit (MPU) is a processor with a data width of more than 32 bits, which has relatively high performance and high price. Different from the traditional general-purpose computer, due to the limitation of system size and power consumption, the embedded microprocessor only retains related functions. Embedded processors currently mainly include Am186/88, PowerPC, MIPS, ARM, and other mainstream series, among which ARM occupies the main market share. Computer-Aided Instruction (CAI) is a variety of teaching activities carried out under the assistance of computers, discussing the teaching content. The implementation of computer-assisted teaching has followed the pace of China’s education system reform. As far as teaching is concerned, it has not only caused changes in the environment and teaching methods, but most importantly, it has brought about the renewal of educational thoughts and concepts, especially a series of changes in the educational system, methods, and content. This article is based on educational theory, educational planning theory, and educational psychology theory, starting from the integration of network multimedia and table tennis course learning, grasping the teaching characteristics of table tennis course, doing detailed demand analysis and system design, and making full use of advanced information technology that has created a table tennis multimedia network teaching platform. This article discusses the design, development, and application research of the network multimedia table tennis teaching system based on the embedded microprocessor through teaching experiments. Based on the network multimedia table tennis, the network multimedia teaching, extension of the system to other physical education teaching provides suggestions and references and explores the future development direction of the network multimedia teaching system through teaching methods. The experiment proves that each test score of the experimental group is tested by a pair of samples, indicating that the application of the platform increases the communication channels and knowledge acquisition; the method facilitates the management of teachers in teaching and improves the degree of informatization of course teaching.