The four cities of Jiyuan, Yuncheng, Jincheng and Changzhi located in the northwest plate of central plains economic zone, has an important position in the construction of central plains economic zone. Region economy concept will help to break the administrative regionalization of concept, to examine the inter-provincial cooperation development, to form the regional economic communities of mutual, harmonious, mutual benefit and win-win result. It not only helps to promote the complementary advantages, mutual benefit and win-win of four cities, but also helps to promote accelerate the process of growing up of the Henan and Shanxi, and more helpful for inter-provincial cooperation experience, provide demonstration. <<