Objective : The purpose of present study was to determine effects of task oriented action observation training on dexterity of upper limb function after stroke. Training was progressed to imitation and intensive training after observation to required action in ADL. Method : 15 stroke patients were selected and one group pretest-posttest design was applied. Targets observed performance actions of task orientated task through a video and limitated action repeatedly, Training was performed 3 times a week and 20∼30 minutes for each round for 3 weeks. Manual function test and 10-second test and Box and block test were performed for a dexterity of upper extremity motor function, Modified Barthel index and Motor activity log were performed for ADL. Result : After the training, a dexterity of affected upper extremity motor function of the target showed significant difference between before and after intervention, ADL showed significant improvement between before and after intervention. Conclusion : Task orientated Action observation lead a positive effect of recovering a dexterity of upper extremity motor function and ADL. Therefore, this study suggest a action observation training as one strategy of an intervention type of th e occupational therapy.