The government Accounting System has been implemented by administrative and public institutions since January 1, 2019. This reform unifies the accounting system formulated by administrative and public institutions according to the characteristics of their respective industries, improves the quality of accounting information, and is conducive to strengthening the operation management, asset control and performance evaluation of administrative and public institutions. Public hospital synchronous implementation of government accounting system, according to the requirements of national unity is formally implemented in 2012 "the hospital accounting system has larger adjustments and changes, part of the system of public hospitals in the transformation and implementation of reform of the system on the background, the significance in understanding does not reach the designated position, influence to public hospital financial management knowledge is insufficient, lead to government accounting implementation effect is not ideal. In this paper, the background and significance of the implementation of the government accounting reform and its impact on the financial management of public hospitals are discussed, so as to improve the public hospitals' understanding of the reform of the government accounting system, adapt to the reform of the government accounting system, and improve the level and quality of the financial management of public hospitals.