Cognitive frailty, as one of the hotspots in the field of geriatric medicine research, is a disease state where physical frailty and cognitive impairment coexist. Cognitive frailty is related to sociodemographic factors, nutritional status, geriatric syndrome, physical and cognitive activities, comorbidities, etc., but the underlying mechanisms are not yet clear. Cognitive frailty not only increases the risk of adverse health outcomes such as falls, disability, and hospitalization in the elderly, but also exacerbates the burden on families and public healthcare systems. This article reviews the recent progress on the cognitive frailty in the elderly, focusing on the awareness of cognitive frailty, the related mechanisms and influencing factors, the assessment methods and non-pharmaceutical interventions to provide reference for clinical application.