China-Pakistan relations over the past half-century have been broad and strategic with each other. The high level of relations between the two countries means improved multilateral. That some of experts of China-Pakistan relations consider as the United States and Israel relations and believe Pakistan is china’s Israel in South Asia. However, the two countries since 2016 announced the expansion of diplomatic relations with each other. The main question of this paper is: What causes expand relations between the two countries in recent years and what impacts on the South Asia region? This paper also considers the expansion of economic relations (completion of The Silk Road Corridor economies) of the China-Pakistan deepen and broaden relations between Washington and New Delhi.  This research findings is that the new relations between the actors leading to polarization (China and Pakistan against US and India) against each other ,the disorder in South Asia region and competition between the actors, that will bring new Cold War in the region.