Objective Healthcare risk has become a popular topic in medical research field all over the world. With the increasing of healthcare safety adverse events and medical conflict cases every year, publications about this topic have been rapidly increased in China, but research on the essentials and categories of healthcare risk are still lacked. This paper aims to summarize the essentials and categories of healthcare risk research systematically through analyzing domestic studies in healthcare risk over the past decade, so as to provide decision-making evidences and policy suggenstions on healthcare risk management in China. Methods We searched the China Academic Journal Network Publishing Database of CNKI (1999-2010), in which those papers’ title containing the phrase of healthcare risk had been brought into our research, then we summerized the domestic concepts and contents in healthcare risk by essential analysis and frequency statistics. Results 255 papers were included, including 26 Class B papers (accounting for 10.20%), six Class C papers (accounting for 2.35%) and 223 Class D papers (accounting for 87.45%); but there were only 79 papers (accounting for 35.11% ) which had a clear definition of healthcare risk. From these papers, we found the essentials of healthcare risk included object, consequences, process and causes, and the research category of healthcare risk included prevention and treatment of risk, causes and effects of factors, risk sharing mechanisms, healthcare risk of special diseases, concept and characteristics, education and training, management method, risks of medical appliances, the species and object of healthcare risk, the category of healthcare risk, the research methods of healthcare risk etc. Conclusion At present, the study of healthcare risk focuses on the risk control and how to release risks from the results, besides, systematic studies are lacked, and the unified definition of healthcare risk has not been formed, Therefore, we recommend that systematic study of the healthcare risks should be strengthened, the definition of healthcare risk should be unified, and the early warning, monitoring, evaluating, and identifying methods should be positively developed, providing decision-making evidences to establish healthcare risk management system in China.