This research reviewed the instrumental ADL for patients with mild cognitive impairment, which is one of the most interested topics, and hope that this research helps evaluating and treating the mid cognitive impairment patients in occupational therapy. The treatment for dementia patients are actively in progress, but there has not been treatment approach about mild cognitive impairment patients, who are in risk of moving on to dementia. In this review, we have dealt with the foundation of matching the point to instrumental ADL from the occupational areas of mild cognitive impairment patients and normal elders. We have discussed the that essential consideration about instrumental ADL is needed to prevent mild cognitive impairment developing into dementia. In conclusion, there is a need of regular evaluation about instrumental ADL considering the occupational areas of mild cognitive impairment patient groups, who are highly in risk of developing into dementia, and occupational therapeutic approach is needed as well.