The study focuses on improving the economic strength and competitiveness of Shandong Peninsula in China by enhancing financial support. The researchers identified key issues in financial resources, supervision, and urban-rural integration within the peninsula city cluster. To address these challenges, they proposed measures to strengthen financial and fiscal support, integrate the financial structure, and expand the Blue Economy Demonstration Zone. These actions aim to boost the economic development of Shandong Peninsula and enhance its regional competitiveness.