A mild cerebral infarction at the age of 42 usually does not affect life expectancy if the infarct area is small and the symptoms are mild. If the cerebral infarction does not involve the brainstem, basal ganglia and other important parts of the brain, the infarction area is small, the symptomatic manifestation is relatively mild, there are only localized limb sensory activity dysfunction, crooked mouth and other manifestations, there is no other obvious neurological dysfunction, and the infarction is no longer aggravated further, it does not affect the life expectancy of the patients in general. Patients with mild cerebral infarction should improve their living habits after clinical cure, quit smoking and limit alcohol, reduce the intake of sugar and oil, eat more grains, fresh vegetables and fruits, and ensure proper exercise. If obese, they also need to lose weight. Patients with hypertension, hyperlipidemia, diabetes and other high-risk factors need to actively take medication to control blood pressure and blood glucose, while taking antiplatelet drugs to prevent second attacks of the disease, which affects the quality of life. If the patient has a relapse of cerebral infarction, he or she needs to call the emergency number 120 at the first time, and avoid driving or taking a taxi to the hospital by himself or herself, so as not to delay his or her condition.