Secondary prevention of ischemic stroke includes the following 3 aspects: 1. Lifestyle intervention, low salt and low fat diet, less sodium and cholesterol rich food, more fresh vegetables and fruits, regular life, work and rest, pay attention to physical exercise, maintain a relaxed mood, quit smoking and alcohol. 2. Long-term regular use of antiplatelet, lipid regulating and brain circulation improvement drugs, strict control of blood pressure, lipid and blood sugar levels. 3. Regularly visit the hospital for review, and the doctor will adjust the drug dose according to the results of the review, so as to improve the long-term prognosis of the patient.