Research on how green finance affects corporate finance is becoming increasingly important as China advances its high-quality economic development alongside ecological civilization construction. This paper systematically reviews the evolution of green finance in China by analyzing relevant academic research and policy developments. The study explores the impact of green finance on corporate finance from multiple perspectives, including access to capital, financing costs, and structural adjustments in financial decision-making. Specifically, it investigates how green finance influences corporate financial scales, cost structures, and overall financial performance. The findings indicate that green finance significantly affects corporate financing by promoting sustainable investment, lowering financing costs for environmentally responsible firms, and reshaping the financial structure of enterprises. Furthermore, the impact varies based on ownership type, company size, and industry sector, with state-owned and larger firms often benefiting more from green finance policies and incentives. Lastly, this paper highlights the key findings while acknowledging existing research limitations, such as data constraints and the need for further empirical validation, providing directions for future studies in this evolving field.