Objective : The purpose of study was to verify the clinical effect of a Korean Computer-based cognitive rehabilitation program(called CoTras) for recovering the cognition and ADL in stroke. Methods : For this purpose, 70 stroke with cognitive disabilities participated in a clinical experiment to verify the effect of CoTras. They were randomly assigned to CoTras Group(40 participants)and Control Group(30 participants). All participant were evaluated with four standardized assessment tools (Lowenstein Occupational Therapy Cognitive Assessment; LOTCA, Motor-Free Visual Perception Test; MVPT, Korean version of Mini-Mental State Examination; MMSE-K, Functional Independent Measure; FIM) before and after the planned cognitive intervention sessions. Cognitive interventions were intensively carried out for 6weeks, half an hour per session, 3 times a week. Results : The results were as follows. Two groups showed no difference in cognitive abilities before the interventions as expected. However, they showed significant differences after the interventions. CoTras Group improved significantly compared to the Control Group Cognition(MMSE-K, MVPT, LOTCA) and ADL scores after CoTras interventions were higher than before it’s interventions. Conclusions : These results indicate that CoTras have effects on improving cognitive abilities and ADL performance in stroke patients. Further studies are needed to verify the effect on various group (ex, dementia).