Cerebral atherosclerosis is a chronic degenerative disease, common in middle-aged and elderly people, easy to complicate stroke, dementia and other diseases, so early detection and timely treatment is extremely important. Early signs have the following symptoms: 1. Sleep disorders are most common: difficulty in falling asleep, easy to wake up, not easy to fall asleep again after waking up, dreamy and clear dreams. Sometimes it is sleepiness, drowsiness, mental fatigue, or alternating with insomnia, without any regularity. 2, memory loss is most significant in the near event forgetfulness, especially for abstract numbers memory difficulties. Usually the attention is lax, the movement becomes sluggish and unresponsive, so the interaction with others is reduced, and the temperament is more withdrawn and difficult to get close to. 3. The most typical manifestation of abnormal temperament is emotional instability, excitement, agitation, temper tantrums or emotional fragility, sentimentality, and anxiety for no reason. Often due to insignificant trivial matters or happy or sad, moody and unpredictable, rapid change of emotions. Patients are often depressed, but it is not serious and not lasting. It is often misdiagnosed as “neurasthenia”, etc. 4.More often have dizziness, headache is mostly dull pain in the frontal occipital area, which appears when the position changes or the existing symptoms are aggravated. Some people feel unstable walking. In case of basilar arteriosclerosis, there may be vertigo, nystagmus, nausea, facial muscle paralysis, and some have swallowing difficulties. 5, cerebral arteriosclerosis can be different depending on the involvement of different parts of the brain tissue, the degree of lesions, the condition of various manifestations, such as internal carotid arteriosclerosis, can appear numbness and weakness of the limbs, limp, one side of the vision loss or blindness; bilateral brainstem capsule sclerosis, there may be slurred speech, involuntary strong laughing and crying, choking back drinking, and even swallowing difficulties, some have sucking performance; extra-pyramidal system damage, facial expressionless, dementia-like symptoms.