Under China’s socialist system, state-owned enterprises are key forces driving the economic trajectory and providing strong momentum. These enterprises not only bear the crucial responsibility of advancing the process of national modernization but also serve as the core of the national economic lifeline through their irreplaceable status and function amidst changing times. In the new era, with the advent of the technological revolution and the wave of globalization, state-owned enterprises face unprecedented opportunities and challenges. As a significant aspect of state-owned enterprise reform, the mixed ownership reform is not only a transformation in the structure of enterprise ownership but also a reflection of China’s broader, comprehensive reform efforts. By deeply advancing this reform, it will help optimize the allocation of state-owned assets and significantly boost technological and management innovation within state-owned enterprises, ensuring their competitiveness in the intense market environment. Therefore, this paper will conduct an in-depth analysis of the mixed ownership reform of state-owned enterprises from the perspective of Marxist political economy.