Abstract Sino-Russian relations have thrived in the post–Cold War era. While the relationship has attracted ample academic attention, many of the underlying factors contributing to the bilateral rapprochement over the past three decades remain un(der)explored. This article examines the role played by one of the factors involved in this process: the development of institutional links between the two states. Bilateral institutions, which were largely absent until the mid-1990s, have rapidly proliferated into a dense network of commissions and subcommissions, working groups, and other institutionalised exchanges, encompassing virtually all sectors of interaction between China and Russia. The article employs analytical concepts borrowed from Institutionalist theory and develops criteria of analysis to assess the extent to which the process of bilateral institution-building has contributed to promoting and perpetuating Sino-Russian rapprochement, enabling the two states to forge a closer working relationship with each other. The article also examines what the limits of this process have been. It concludes that the practical impact of bilateral institution-building on policy-making has been modest; however, the institutions have come to constitute important forums to secure a regular exchange and familiarisation between senior decision-makers and stakeholders, allowing for an active communication of important information and mutual assurances regarding each country’s policy choices, intentions, and concerns.