The moderate separation of economic and administrative zones reform is a powerful lever for China to implement the new development concept and promote the construction of a unified national market. “The Outline of the Plan for the Construction of the Chengdu Chongqing Dual City Economic Circle” clearly proposes to explore the moderate separation and reform of economic and administrative zones in Chengdu and Chongqing regions. This article systematically reviews the practical process of the moderate separation reform between economic zones and administrative regions in the Chengdu Chongqing Economic Circle，and summarizes four major models of moderate separation between economic zones and administrative zones：urbanization model，adjacent area collaboration model，construction model，and enclave economy model. However，in the process of reform，there are still problems such as inconsistent policies and factor prices across provinces，games between administrative regions under government’s dominant，and lack of legal norms and unified institutional arrangements for long-term cooperation. To further promote the efficient implementation of reforms，it is necessary to strengthen the core carrying capacity of the “dual core” of Chengdu and Chongqing；Stimulate the radiation carrying force of the “double circle”；Enhance the synergy of nine major functional platforms in adjacent areas.