The master's thesis is devoted to the areas of improvement of state audit in the financial security system of Russia on the example of the accounting chamber. The final qualifying work consists of an introduction, three chapters, conclusion, list of sources used, and appendices. In the first Chapter, the theoretical aspects of the state's financial security are considered, and current threats are identified. The second Chapter analyzes and evaluates the activities of the accounting chamber for 2017-2019. The third Chapter suggests ways to improve the efficiency of the accounting chamber.