Secondary prevention of stroke is the entire process of preventing recurrent stroke in patients who have had one or more strokes by finding the cause of the stroke event, treating reversible causes, and correcting all intervening risk factors. Studies have shown that the incidence of recurrent stroke after stroke is high. 25% of stroke survivors have a recurrent stroke within 2 years; 42% of men and 24% of women have a recurrent stroke within 5 years, and 70%-80% of patients often have a recurrent stroke resulting in severe disability or death. These include control of blood pressure, glucose, lipids, obesity, antiplatelet aggregation, anticoagulation, surgical treatment, interventional therapy and lifestyle changes, which are aimed at preventing or reducing the risk of recurrent stroke in stroke patients. 1. Control of risk factors for stroke Hypertension, diabetes mellitus, heart valve disease, hypercoagulability of blood, hyperlipidemia and hyperplatelet aggregation are now considered as independent risk factors for stroke, and active treatment of related diseases is an important part of secondary prevention. For example, hypertension is the most common controllable risk factor for stroke, and there are more than 100 million patients with hypertension in China, but only 83% of urban patients receive treatment, and 95% of them cannot adhere to long-term treatment. A large randomized controlled study showed that anticoagulation therapy reduced stroke incidence by 68% and aspirin reduced recurrence by 21%. Endarterectomy and endoprosthetic angioplasty for high-risk cerebral artery stenosis have also been shown to have good preventive effects. 2, maintain a healthy lifestyle Maintaining a healthy lifestyle for a long time will help reduce the incidence of stroke, especially in the middle-aged population, due to high work pressure, socializing, a sedentary lifestyle, excessive smoking and drinking and irregular life, etc., is very likely to cause hypertension, atherosclerosis, laying the roots of future cardiovascular disease. Therefore, we advocate good living habits, such as advising people to eat reasonably, avoiding overeating, avoiding satiety, eating a diet low in fat, sugar and salt, eating more vitamin-rich vegetables and fruits and protein diet, taking appropriate calcium supplements, reducing the amount of salt, quitting smoking and alcohol, properly controlling weight and animal fat intake, strengthening physical exercise, maintaining good physical fitness, living a regular life, moderating work and rest, and maintaining A relaxed mood and psychological balance. By controlling risk factors and maintaining a healthy lifestyle, 75% of strokes can be prevented. 3. Regular neurological checkups necessary auxiliary examinations and laboratory tests for timely detection. In order not to miss the good opportunity of prevention and early treatment.