The invention discloses a rope-driven spinal side bending rehabilitation medical robot. The medical robot is mainly composed of an upper layer of correcting circular ring, a middle layer of correcting circular ring and a lower layer of correcting circular ring and is in an overall curve shape matched with the trunk of a patient. Every two adjacent layers of correcting circular rings are connected through ropes, a rope driving device is composed of a servo motor and rollers, the servo motor drives the rollers to rotate so as to control the extensible lengths of the ropes, and accordingly three-dimensional dynamic force correction of the patient is achieved. The medical robot is convenient to wear and can be well matched with the curve of the trunk of the patient, correction force can be dynamically adjusted, spinal side bending can be prevented from being further deteriorated, rehabilitation and adjuvant therapy of postoperation of adolescent idiopathic spinal side bending diseases, postoperation of spine motion injuries, spine postoperation and the like can be achieved, and the robot can also be used for monitoring the spine health state of a wearer in real time.