The invention provides an intelligent rehabilitation method and system, and belongs to the medical technical field. The intelligent rehabilitation method comprises the steps that a patient executes one or more of following motion modes for training: a constant-speed mode, wherein torque of a motor is adjusted in real time based on torque applied by the patient, so as to guarantee that the motor rotates constantly at a preset rotation speed; an equal-length mode, wherein, the torque applied by the patient is adjusted based on preset resistance torque applied by the motor; an isotonic mode, wherein, the rotation speed of the motor is adjusted in real time based on the torque applied by the patient, so as to guarantee that the torque of the motor is not changed; a passive mode, wherein, the voltage for being supplied to the motor is adjusted based on the rotation speed of the motor after the patient applies the torque, so as to guarantee that the rotation speed of the motor is consistent with the preset rotation speed. Thus, the patient can set by himself corresponding treatment intensity, treatment time, and the like based on his own conditions; besides, active movements of the patient and passive stretching are combined, so that the rehabilitation training time is greatly shortened for the patient.