Recently, the Communist Party of China Central Committee and the State Council recently issued the “outline of the integrated regional development of the Yangtze River Delta”, which clearly defined the planning scope, strategic position and development goal of the integrated development in the Yangtze River Delta. The central government requires the delta region to achieve a higher-quality integrated development, which is a high standard for the leading region of China. However, to achieve the dual-development of "integration" and "high-quality", we should not only highlight a single aspect. Therefore, the national strategy of the integrated development in the delta region is not only a regional economic event, but also a strategic choice related to the overall situation of China's economy. Its key is to take the competition policy as the institutional cornerstone for promoting the construction of market integration in the Yangtze River Delta.At present, China's super large-scale market advantages are only potential. The current domestic market is not a unified market, but a fragmented one, formed by the "administrative region economy" pattern. In order to promote the market integration in the Yangtze River Delta, the difficulty and fundamental lie in the governance mechanism. We should take the competition policy as the means and mechanism to promote the high-quality integrated development of the Yangtze River Delta. In the process of promoting the regional market integration in the Yangtze River Delta, we should pay attention to the dominant role of enterprises, especially enterprise groups.
