In the sixth issue of Journal of Shanghai University of Finance and Economics in 2021, Chen Wanling and Chen Yiyu wrote that the advancing of the national strategy of regional coordinated development means that local interests will evolve from uniformity and separatism to become more integrated and public. The coordination of different interests and demands and the adjustment of interest patterns are the core issues that "regional coordinated development" must address. The coordination of regional interests needs not only the guidance of policy tools, but also the institutional norms of legislation. Both governance tools are indispensable. The structural imbalance between policy tools and legal tools is inconsistent with the national governance concept of promoting the comprehensive rule of law and adhering to the integrated development of the country, government and society under the rule of law. Legal governance model is the key force in coordinating interests, solving conflicts and establishing order. We must enhance the legal thinking in terms of regional interest adjustment, and transform mature regional policies into law through necessary procedures, form a reproducible authoritative rule system, and achieve the transformation of regional interest coordination from power intervention to legal governance.