This study was to evaluate the effect on cognitive function after conducting the workbook program in a community living environment to a patient who got a cognitive impairment after diagnosed with stroke in a community living environment. This study consists of 14 stroke patients, and were divided into two groups-seven people who conducted workbook program in a community living environment; and seven people who conducted traditional occupational therapy, mainly about task activity. Workbook program was conducted for fifty minutes, three times a week for six weeks. Pre and post evaluation was conducted before and after intervention. Montreal cognitive assessment-Korea (MoCA-K) and computer cognitive senior assessment system (COSAS) were used to test cognitive function. The identify between experimental and control group was verified, and after the workbook mediation the score of attention and abstract ability significantly improved in total score and subcategories of MoCA-K. In the change of each group, The total score of MoCA-K showed significant difference; and the attention, which is subcategory, also showed significant difference. In addition, in COSAS evaluation, orientation, which is subcategory, showed significant difference between the change in each group. Workbook program showed a significant effect on orientation, attention, abstract abilities of stroke patients living in the community. This research suggests that if you apply the mediation of remedial approach for an improvement of cognitive function of community-living stroke patient, the workbook program can be an effective way.