In our life, the term “cerebral thrombosis” refers to cerebral infarction, which is generally acute, but many patients have some early signs 1 to 2 days or hours before the onset of the disease, which, if recognized in time and treated actively and effectively, can turn the patient into a safe one and prevent the occurrence and progress of cerebral thrombosis. The precursors of cerebral thrombosis mainly include: 1. Transient distortion of the mouth and eyes, drooling, slurred speech, difficulty in spitting out words, incomprehensible speech or incomprehensible speech, choking and coughing, weakness or inflexibility of one limb, unstable walking or sudden fall. This is caused by insufficient cerebrovascular blood supply and motor dysfunction. 2. Numbness of the face, tongue, lips or limbs, some people may have haziness in front of the eyes or have difficulty seeing things for a while, tinnitus or hearing changes. This is due to the lack of blood supply to the brain and affect the sensory function of the brain. 3. Disorders of consciousness, performance of mental depression, always want to sleep or drowsy all day. The personality is also uncharacteristic, suddenly becoming silent, indifferent expression, slow action or talkative, and some have transient loss of consciousness, which is also related to cerebral ischemia. 4. General fatigue, weakness, sweating, low fever, chest tightness, palpitations or sudden eruption, vomiting, etc., which are manifestations of vegetative nerve dysfunction. The first two of the above symptoms are more common and recurrent. These symptoms may not be present in every patient, but whenever precursor symptoms appear, especially in middle-aged and elderly people, they should be especially alert. At this time, the patient should be kept quiet, rest in bed, avoid mental tension, and be sent to the hospital for timely treatment.