The symptoms and characteristics of cerebral thrombosis depend mainly on the specific vessels occluded by the thrombus, as well as the size and location of the infarct foci. The common occluded vessels include the internal carotid artery system and the vertebrobasilar blood supply system.1. The internal carotid artery system, including the internal carotid artery, anterior cerebral artery, middle cerebral artery and their branches, infarct foci are usually ipsilateral to the infarcted vessels and manifest as infarcts of brain tissue in the frontal, temporal, parietal and basal ganglia regions. The clinical manifestations are mainly the following three points: first, dysarthria and aphasia, mainly due to infarction of the speech area of the left cerebral hemisphere; contralateral central facial and tongue palsy, which is manifested by skewing of the facial muscles to the healthy side while the tongue extends to the hemiplegic side. The second point, bilateral gaze impairment to the contralateral side, is manifested by bilateral gaze, restricted movement, and inability to move left and right autonomously, while hemianopia can occur. The third point is central hemiparesis and hemiplegic sensory disorder on the opposite side of the infarct, which manifests as motor impairment and sensory numbness and tingling of the limb on the opposite side of the infarct. 2. Vertebrobasilar artery blood supply system, which mainly includes the basilar artery, posterior cerebral artery, posterior inferior cerebellar artery and its branches, and the infarct is usually located in the brainstem, cerebellum, thalamus, occipital lobe and temporo-occipital junction. Clinical features include vertigo, vomiting, diplopia, hoarseness, dysphagia, and ataxia. Signs that can be detected during physical examination include: crossed paresis, which is manifested by ipsilateral peripheral facial nerve paralysis of the infarcted vessel and central limb paralysis on the opposite side, or crossed sensory disorders; cerebellar ataxia, which is manifested by unbalanced walking with the sensation of stepping on cotton; nystagmus, balance disorders, and reduced muscle tone of the limbs, etc.