In the context of the rapid development of contemporary medical industry and the unbalanced development of various subspecialties, expert consensus plays an extremely important role in guiding clinical practice and improving the quality of medical care. However, there are some deficiencies and limitations in the formation process and final report of the expert consensus. Therefore, this paper summarizes and reviews the definition, applications, and functions of expert consensus and the new progress of expert consensus formation methods by fully reviewing the literature, and puts forward the prospect. The purpose is to provide a reference for the production and application of expert consensus related to medical care, improve the outcomes of medical care, and upgrade the quality and level of medical services.