The causes of cerebral infarction are related to age, diabetes mellitus, heart disease, and other diseases such as connective tissue disease, etc. The causes of cerebral infarction are related to age, diabetes mellitus, heart disease and other diseases such as connective tissue disease. 1. Age: Age is one of the risk factors for the development of cerebral infarction. With age, the elasticity of blood vessels decreases, atherosclerosis is easy to form, and cerebral infarction is triggered when blood vessels are occluded. 2. Diabetes mellitus: if the patient has a history of diabetes mellitus, poor control of blood sugar can cause diabetic macrovascular lesions leading to cerebral infarction. 3. Heart disease: if the patient suffers from heart valve disease, atrial fibrillation and other diseases, thrombus will be formed in the heart, and the embolus can be dislodged, thus blocking the cerebral blood vessels and causing cerebral infarction. 4. Other diseases: for example, leukemia, aortitis, etc., may trigger cerebral infarction. To summarize, blood pressure is not high, lipids are not thick can also get cerebral infarction, cerebral infarction symptoms should be timely consultation, so as not to delay the condition, resulting in sequelae and other adverse consequences.