Since the mid-1990s China's and Russia's strategic outlooks have gradually been converging. The two great powers have incrementally shed their mutual apprehensions and started a comprehensive and multifaceted cooperation in the Shangai Cooperacion Organization. Simultaneously, as ther rift between the US and Russia has opened up and the differences in their views on regional security in Eurasia have become even more evident. China's and Russia's quests for new models for regional security in Central Asia have gained ground. Enveloping the Central Asian states on issues of collective and energy security, both states are sternly against US dominance in international affairs. In this sence, they hace intimated a new geopolitical script around Central Asia. As their mutual interest hold sway over US influence regionally, questions remain on whether specific interest are compatible, or harbour new rivalries. Chinese-Russian interactin in Central Asia reveals that there might be limits to the future expnasion of their partnership