How long can 50% stenosis live cannot be generalized, its degree of stenosis is not too high, and the main cause of stenosis affecting life expectancy is cerebral infarction caused by blood vessel blockage, the specific survival time can not be determined, and it is related to a variety of factors such as individual physique, progress of the disease, and the sensitivity of the treatment. Vascular stenosis 50% need to actively receive treatment, such as the use of medication, including nifedipine extended-release tablets, amlodipine benadryl tablets, nimodipine tablets and so on. Meanwhile, patients should avoid spicy and stimulating food, avoid overwork and pay attention to rest after treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication. Meanwhile, the key to how long a patient can live with 50% stenosis lies in whether he or she follows the doctor’s instructions and whether he or she maintains a healthy lifestyle. It is recommended that patients maintain an optimistic attitude and actively cooperate with the treatment.