After cerebral infarction, cerebral hemorrhage, traumatic brain injury and other brain injuries, once the condition is stabilized, it is necessary to start the rehabilitation therapy, some patients can start the rehabilitation therapy even if they are in ICU if their vital signs are stable. This includes good limb position placement, passive joint activities to maintain joint mobility, and active rehabilitation is best for patients who are able to cooperate well, and active rehabilitation is the most favorable to the functional recovery of patients in the future. Functional disorders targeted by rehabilitation include: motor dysfunction, sensory dysfunction, balance and ataxia, speech disorder, swallowing disorder, cognitive disorder, and consciousness disorder. In addition, patients with severe and unstable conditions should pay attention to the position of the good limbs and daily passive joint activities, and also pay attention to regularly assist patients to turn over, etc., in order to prevent long-term bed-ridden joint contractures, pressure sores, pneumonia and other complications. Rehabilitation treatment should be carried out under the guidance of professional rehabilitation physicians and therapists in order to achieve the best functional rehabilitation effect.