Abstract: Objective Research the difference in the 5 Chinese versions of Montreal Cognitive Assessment Scale, understand its local applicability. Methods Based on the application of the Montreal Cognitive Assessment Scale for an assessment on cognitive function of general elderly population and patients with ischemic stroke, appreciate the differences in the 5 Chinese versions. Results In the actual application, found the parts of the settings are not fully adapting to the local cultural background, it may cause a false positive rate of cognitive impairment increased, thus affecting the assessment of validity. Suggest the big Chinese region should study together and form an unified Chinese version of the cognitive function assessment scale as possible in order to facilitate evaluation of research results in related fields and exchange.

Key words: cognitive assessment, montreal cognitive assessment scale, cultural background, application experience