This paper uses the method of combining induction and deduction, analysis and synthesis to sort out General Secretary Xi Jinping's important expositions on financial work, and makes a systematic analysis of the theoretical logic and practical direction of financial reform, development and stability. This paper believes that in-depth study of General Secretary Xi Jinping's important expositions on financial work has great theoretical value and practical significance. General Secretary Xi Jinping's important expositions on financial work comes from Marxist-Leninist financial theory and Mao Zedong's financial thought, which enriches and develops Socialism with Chinese characteristics's financial theory, and is a theory that comes down in one continuous line with Marxist political economy and keeps pace with the times. The basic theoretical issues of Socialism with Chinese characteristics's financial reform, development and stability in the new era are clarified, such as the role of finance, the essential purpose of finance, the concept of financial development, and the principles of financial work. It points out the practical direction of Socialism with Chinese characteristics's financial reform, development and stability in the new era, such as accurately judging the financial situation, fulfilling the financial purpose and mission, preventing and defusing financial risks, unswervingly deepening financial reform, strengthening financial supervision and coordination, steadily expanding financial opening, introducing high-end financial talents, and adhering to the centralized and unified leadership of the Party. General Secretary Xi Jinping's important exposition on financial work is a scientific summary of both positive and negative experience of international and domestic economic and financial practice since China's economic development entered a new normal after the international financial crisis. It is a major achievement of the Sinicization of Marxist political economy, an important part of Xi Jinping Thought on Economy, and an action guide for the reform, development and stability of socialist finance with Chinese characteristics in the new era.