Minor stroke is “subclinical stroke” or “asymptomatic stroke”, which refers to a group of strokes with minimal or no clinical signs and symptoms and is easily ignored by patients, families and even doctors. Unlike symptomatic strokes, which have typical symptoms such as hemiparesis, aphasia, choking on water, partial blindness, and even coma, minor strokes usually have a sudden onset and last for a short time. Some of them have no clear neurological signs and symptoms, and are usually diagnosed at the time of recurrence or discovered by chance during imaging. Asymptomatic stroke can be detected in some patients with lacunar infarction, white matter sparing or cerebral microhemorrhage during CT or magnetic resonance imaging (MRI) examination. Although small strokes are asymptomatic or mild, they can have serious consequences without active intervention, mainly: first, increased risk of stroke and death; second, low cognitive function or dementia. Third, depression, such as early awakening, depressed mood, feeling uninterested in everything, and personality changes, such as a very clean person, becoming unkempt and lazy, or in severe cases, suicidal. Stroke is preventable and treatable, so it is important to take the necessary steps to prevent it before it happens. First, we should assess the vascular risk, check carotid ultrasound, TCD, and CTA or MRA if necessary; second, we should take active secondary prevention and control risk factors, such as taking antihypertensive drugs under the guidance of doctors if you have high blood pressure, controlling blood sugar if you have diabetes, quitting smoking and drinking, and maintaining a healthy lifestyle, in addition to taking long-term oral aspirin and other anti Third, go to the hospital for cognitive function and psychological assessment to determine the presence of dementia and depression. Therefore, it is important to pay attention to small strokes, to detect abnormal brain “signals” in time, and to take effective preventive measures to prevent them before they happen. Dr. Guo Yangui, Deputy Chief Physician, Department of Neurology, Jinan Hospital of Traditional Chinese Medicine, is available on Monday and Saturday afternoons and Tuesday mornings.