Objective To construct the expert consensus on comprehensive rehabilitation assessment system for the elderly in the hospital and community. MethodsMedline, Embase, Cochrane Library, China National Knowledge Infrastructure and VIP databases were searched for geriatric rehabilitation assessment materials from June 2016 to June 2021. The primary items were summarized through literature review and research group discussion, and then Delphi method was used among 20 experts in geriatric rehabilitation medicine to develop consensus-based core items for the elderly comprehensive rehabilitation assessment system. Results A total of 158 references were included. Through integration, sorting and screening, the research team initially formulated 41 items and four major sections including cardiopulmonary exercise, sensory perception, cognition and psychology (speech contained), and swallowing, urination and defecation. The effective recovery rates of the two rounds of experts consultation were both 100%, the mean expert authority coefficient was 0.92±0.05, the variation coefficients were 0.174±0.043 and 0.172±0.063, respectively; the Kendall coefficients of concordance were 0.587 and 0.601, with P values<0.05 for both, respectively. Finally, The comprehensive rehabilitation assessment system for the elderly including 16 items would be formed. Conclusion The expert consensus on comprehensive rehabilitation assessment system for the elderly constructed by Delphi method includes motor, sensory perception, cognition, swallowing, speech, cardiopulmonary, defecation, mental and psychological elements, which are identified with high recognition and consistency from experts.