As the intensification of population ageing，the incidence of cognitive dysfunction（also known as “dementia”）is on the rise. The impact of the“stigmatization”of the diseases on dementia patients has received widespread attention. The article reviews the concept，type and current state of dementia“stigmatization”and summarizes its characteristics in terms of knowledge，attitude and behavior. It also examines the impact of “stigmatization”on the social participation，health-seeking behavior and health of older adults with cognitive impairment. Additionally，the article discusses current international interventions and the effectiveness of existing problems regarding the“de-stigmatization”of dementia. Based on existing research it proposes building a“de -stigmatizing”social environment through dementia -friendly communities，and at the same time focusing the need to address the utilization of health services and health inequalities caused by “stigma”. We also emphasize the importance of equity and cultural inclusion in building dementia-friendly communities.