Abstract: Purpose/Significance With the rapid development of the economy and society, decision-making issues are becoming more and more complex, which have many uncertain factors. As a result, traditional large group decision-making theory and method have begun to be combined with risk decision-making theory and developed into large group risk decision-making theory and method, which has become a hot field of large group decision-making research at home and abroad with broad application prospects in the real situation. Design/Methodology This paper combs the main research results in the field of large group risk decision-making in recent years, expounds on the problems and challenges faced in this research field, and points out the future development trend of large group risk decision-making. Conclusions/Findings In the field of large group risk decision-making, the existing domestic and foreign literature mainly focus on five aspects: the identification of large group emergency decision-making risks, the large group risk decision method considering the risk attitude of decision members, the large group risk decision method considering the psychological behavior of decision members, the large group risk decision method under the social network, and the large group risk decision method under the background of big data. On the basis of existing research and gradually developed technology, dynamic, socialized large group risk decision-making in the big data environment brings new challenges to this field and is worthy of further exploration.