2017 witnessed the acceleration of the paradoxical development of Sino-Australian relations：the Turnbull government had on the one hand politically turned right and intensified Australian-American military alliance to contain China's rise in power and influence in the “Indo-Pacific”region；on the other hand，it aspired to maintain an intensified economic cooperation and trade with China in the hopes of keeping Australian prosperity and employment.The paradoxical development might be attributed at one level to Australia's domestic politics and at another level to increasing American pressure.The powerful right-wring forces in Australia and the weakened Turnbull government led to the changed Australian China policy.Australia has pursued a strategy of aligning with a superpower since its independence in trade for economic benefits and protection.In return，Australia has to be committed to the alliance as well as the interest of the United States，which reveals the alliance is more based on shared political，economic and security interest rather than shared culture，history and value.As a middle power，Australia differs the United States in the fundamental interest and can hardly prioritize the containment of China in its strategic objectives.The momentum of economic integration and interdependence between these two nations remains strong，which bases Sino-Australian relations and makes it hard for any radical change in Australian China policy.