Thalamic syndrome is a syndrome caused by thalamic lesions, commonly associated with cerebrovascular disease. It is characterized by hemiparesis, hemiplegia, and hemiplegia ataxia, and is called the thalamic triad. The main symptoms of thalamic syndrome include: hemiparesis of the contralateral limb, hemiplegia of the contralateral side (mainly deep sensation), spontaneous pain in the contralateral side of the contralateral side of the contralateral side of the contralateral side of the hemisphere, ataxia of the contralateral side of the contralateral side of the limb, involuntary movements of the contralateral side of the contralateral side of the contralateral side of the contralateral limb, and intentional tremor such as tremor of the hands and feet and choreography-like movements. Thalamic tumors rarely occur in the above typical manifestations, and there is a great variation in clinical symptoms. When the tumor develops to the front medial side, the mental disorder is more obvious; when it develops to the lower part of the thalamus, the endocrine disorder is more prominent; when it develops to the thalamic occipital, in addition to ipsilateral hemianopsia on the contralateral side of the lesion, it also affects the tetralogy of Fallot, and the symptoms of pupil disparity, ocular upgaze disorder, and hearing disorder are present. If thalamic syndrome occurs, you should go to the hospital immediately, and determine the cause of the disease by clinical symptoms, combined with head CT or magnetic resonance imaging to identify the cause of the disease, and then treat the cause of the disease.