Vietnam has achieved significant results in terms of improving population health and sustainable development goals (SDGs). However, several public health problems remain such as high mortality deriving from non-communicable diseases (NCDs). As part of their long-standing relationship, Vietnam and China have collaborated in various health fields. The objective of this study was to examine the current situation of public health cooperation between Vietnam and China and suggest ways to deepen future co-operations.Between March and May 2018, we conducted 14 in-depth interviews with key informants from Vietnam and China. The inclusion criteria in this study were as follows: 1) researchers who worked at research institutes or universities and were engaged in health cooperation research, 2) officers who were from government agencies or international organizations (IOs) and had been involved in, or were familiar with the health cooperation projects between China and Vietnam. The interviews were audiotaped and transcribed verbatim, and then analyzed to identify current cooperation strategies and cooperation fields, as well as to provide suggestions for future collaborations.Current health cooperation mechanisms between China and Vietnam include bilateral and multilateral cooperation such as ASEAN Plus Three (China, Japan and ROK), ASEAN Plus One (China), the Greater Mekong sub-region, and the Lancang-Mekong Cooperation. This health cooperation can be summarized in terms of health security, health development, and health-related innovation. The health cooperation priorities outlined by our informants consisted of unimplemented SDGs such as NCD problems and the public health system. A proposal for future health collaboration was to establish a triangular cooperation between China, IOs/non-government organizations (NGOs) and Vietnam.The existing cooperation between China and Vietnam in bilateral and multilateral levels has provided a good foundation for a deeper and more extensive future partnership. Key areas of future cooperation would be to achieve SDGs and solve NCD related problems, which can be accelerated through favorable cooperation and reliable partnerships. A triangular cooperation between China, Vietnam, and IOs/NGOs was considered as a suitable future mechanism.