China and Australia are extremely significant trade partners and investors. Australia has a very well established competition law, now called the Competition and Consumer Law 2010, with a well-established merger regime. China has a relatively new competition law, the Anti-Monopoly Law 2007. This article compares merger control in the two jurisdictions. The Ministry of Commerce (MOFCOM) has already referred to an Australian decision in rejecting a merger, the only reference to a foreign decision to date, which confirms the utility of the comparison. This article critically evaluates the determinations of MOFCOM and compares the approach of the Australian Competition and Consumer Commission (ACCC), the Australian regulator. It assesses the transparency and predictability of procedures and decision-making in the two jurisdictions.