PURPOSE: A rehabilitation training system of exercise and cognition based on a biosignal is provided to shorten the rehabilitation training period, to maximize a treatment effect by interest induction and motivation, and to enable a patient to repeat rehabilitation. CONSTITUTION: A rehabilitation training system of exercise and cognition (100) comprises: an electromyographic module (110) which is attached onto a user's body and acquires an electromyographic signal by sensing a user's motion; a central unit (130) which compares the electromyographic signal with threshold values and outputs a key operation signal corresponding to the compared result; and an interface unit (140) which transmits the outputted key operation signal to an electronic device and controls the electronic device. A rehabilitation training method of exercise and cognition comprises the steps of: acquiring the electromyographic signal using the electromyographic module; outputting the key operation signal; and transmitting the outputted key operation signal to the electronic device and controlling the electronic device. [Reference numerals] (110) Electromyographic module; (120) Signal processing unit; (130) Central unit; (131) Control unit; (132) Setting unit; (133) Manipulation unit; (140) Interface unit; (150) Database; (AA) Attach; (BB) Detach; (CC) Smart phone; (DD) Smart TV; (EE) Tablet PC본 발명은 사용자의 신체에 부착되어 상기 사용자 근육의 움직임을 감지하며 근전도 신호를 획득하는 근전도 모듈, 신호 처리한 근전도 신호를 문턱치와 비교하고 상기 비교한 결과에 대응하는 키 조작신호를 출력하는 중앙 유닛 및 상기 출력된 키 조작신호를 전자장치로 전송하여 상기 전자장치를 제어하는 인터페이스부를 포함하는 운동 및 인지 재활 훈련 시스템을 제공한다.