Due to the huge user base, highly flexible technical performance and network characteristics of the Internet, the Internet has become an ideal business platform and has formed a global network economy. In the current multimedia environment, some new economic forms such as virtual enterprises have emerged. These companies have no real office space. The prosperity of Internet and information technology has broken the previous business model and accounting model, and the network accounting model came into being. The emergence of a new industry will certainly be accompanied by many problems. For example, information management is difficult, information security is not high, and theoretical development is immature. Therefore, the management of network accounting has become an important topic. Embedded microprocessors are more and more widely used in various electronic devices due to their high performance, low power consumption, and portability. This article will study the mode management of network accounting based on embedded microprocessor. This article introduces the methods of network accounting and embedded microprocessors. A network system was designed based on an embedded microprocessor. This article tested the system and got the result: the average accuracy of the system's forecast of operating income is about 94%, and the average accuracy of forecast of operating costs is 93%. The network accounting system's forecast accuracy rate for sales expenses is 90%, and the forecast accuracy rate for management expenses is 92%. The average processing capacity of the system is 13.9time/s. The average value of the maximum server occupancy rate under different threads is 49.83%.