Studies have found that the risk of mild behavioral impairment（ MBI） developing into dementia in the future is extremely high and can be regarded as the early stage of dementia. Exploring the clinical evaluation methods of MBI can help clinicians identify MBI earlier and delay the occurrence and development of dementia. This paper gives an overview of clinical evaluation methods of MBI and the advantages and disadvantages between every method， in order to attract the attention of clinicians and provide a more standardized， comprehensive and reasonable evaluation plan for clinical work.