At present, with the continuous development and growth of management accounting in China, management accounting information is the only way for every developing enterprise, which brings great benefits to the enterprise, and also improves the working efficiency of the management accountants. In the process of the continuous development of management accounting information, the new financial sharing service mode has provided a promotion role, while management accounting information provides an electronic information platform for financial sharing services. The two complement each other and act together in the enterprise, which can play a greater advantage in the enterprise, making the daily accounting of the enterprise more convenient and the financial data more transparent. Therefore, it is necessary to combine the financial sharing service mode with the management accounting information. The function of Financial Sharing Service Mode on management accounting informatization.