There is no evidence that a certain Chinese medicine can prevent cerebral infarction. Cerebral infarction belongs to the category of stroke in Chinese medicine. According to the theory of Chinese medicine, people with deficiency of yin in liver and kidney (deficiency of yin in liver and kidney) are prone to stroke, and Chinese medicines can regulate the symptoms of people with deficiency of yin in kidney and thus reduce the triggers. Stroke is a sudden onset of fainting, hemiplegia (inability to move one limb at will), distortion of the eyes and mouth, inability to speak, and difficulty in swallowing. According to Chinese medicine, its pathology is based on Yin deficiency of the liver and kidney or deficiency of Qi and blood, and its pathogenesis is the imbalance of Yin and Yang, and the reversal of Qi and blood. People with symptoms of liver and kidney yin deficiency such as tinnitus, lumbar and knee pain (a feeling of weakness in the waist and knees), dizziness, facial redness, hot flashes (a burst of heat), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), and who are emotionally irritable are prone to hyperactivity of liver yang (a high level of liver yang, which can lead to dizziness, dizziness, and headache), and to strokes due to the internal movement of the wind in the liver. People with the above symptoms can use Chinese medicines that nourish the liver and kidneys to regulate their physique, such as Radix Rehmanniae Praeparata, Chinese yam, and Rhizoma Polygonati Odorati, etc., and at the same time adjusting their emotions and keeping them calm can, to a certain extent, play a preventive role.