15 million people worldwide are annually affected by stroke. One thrid of that number are permanently disabled. Stroke is the leading cause of disability in the world. Although the incidency is decreasing in developed countries, the total number of disabled patients is increasing because of the aging population. WHO predicts that the number of patients with stroke will increase for another 30 % between 2000.-2025. According to their mechanical characteristics electromechanical robots are divided into two categories : exoskeleton and end effector. According to the control strategy, robots can be divided into five groups: passive movement active nonassist mode, active assist mode, resistive mode and bimanual exercise. Exoskelet robots are parallel to the patients arm, they are connected with the arm in multiple places and the engines are placed on top of them. End effector robots have a robotic arm which is only connected by its end to the patient and although the movement of the robot is not the same like the movement of the arm the combined movement is in the same direction. Electromechanical roborts have sensory stimulation and they are capable of repetitive exercise which can lead to new experiences and new ways to use the arm. All that are predictors of positive recovery in rehabilitation. The positive effects of robotic therapy have been proved in multiple studies. Robotic therapy can be more economic than conventional methods and it can lead to less usage of educated workforce which results in better savings in the healthcare system. In the beginning, the investments would be considerable but we can expect that price of the robotic systems will decrease in the near future. Applying robotics in rehabilitation medicine is a matter of time. Moreover , many leading healtcare centers are already using integrated robotic and conventional therapy.