Radial coronal cerebral infarction refers to the site of cerebral infarction in the radial coronal area, which is also a very common site clinically, and is usually the formation of lacunar cerebral infarction. If the area of infarction in the radiocoronal area is relatively large, sensory impairment and immobility of the contralateral limb may occur, and it may cause problems such as hemianopia and quadrant blindness. If the area of infarction in the radiocoronal area is so large that it affects the patient’s consciousness, resulting in blurred consciousness, drowsiness, lethargy or coma, active treatment should be carried out. In clinical practice, most of the infarcts in the radiocoronal area are lacunar infarcts, which do not have any symptoms. Usually, when MRI of the head or CT of the head is done, the presence of small lacunar infarct foci is detected, and primary or secondary preventive medication for cerebrovascular disease should be initiated.