Neuropsychiatric symptoms ralated to negative emotions, such as anxiety and depression,
are a key indicator of early identification and early intervention for elderly people with mild cognitive
impairment. In this paper, the neuropsychiatric symptoms related to mood in MCI and MCI subtypes,
and the relationship between anxiety, depression, MCI and dementia are reviewed. It is believed that
the relationship between anxiety, depression and MCI is reciprocal, and both of them can accelerate the
process of MCI or MCI subtypes to dementia. In the future, the research direction can not only be limited
to the attention on the behavioral indicators of the negative emotions among older adults with MCI or
dementia, but also can be combined with the biomarker indicators for comprehensive identification and
intervention, improving the daily emotional experience and quality of life among aging populations.