Once the root is narrowed or aborted, the branches, leaves, flowers and fruits supplied by it will also die quickly. If anyone, even young adults, lack stroke prevention health awareness, and do not take care of their health with reckless spending, it is inevitable that cardiovascular and cerebrovascular diseases will come sooner or later. Case 1: Male, 46 years old, an officer of an armed police force, was admitted to the hospital with “recurrent dizziness with unsteadiness for 2 weeks and slurred speech for half a day”, the patient was busy with public relations and entertainment, addicted to alcohol and smoking, obesity, fatty liver and hypertension were detected in physical examination, but no attention was paid to them. After admission, the examination indicated that the patient had hyperlipidemia, hyperglycemia, hypertension, hyperuricemia, and obesity, and ultrasound and MRI indicated “intracranial multiple arteriosclerosis with stenosis and severe stenosis of basilar artery”. Although the patient was treated with active endotracheal intubation, ventilator-assisted ventilation and pharmacological support, he eventually died. The lesson of this case is that the patient’s poor lifestyle such as long-term smoking and alcoholic high-fat diet, coupled with indifferent health consciousness and failure to pay attention to quality control of cerebrovascular disease risk factors, and ignoring the precursor of cerebrovascular disease “dizziness and transient blackness”, eventually led to the tragedy. Case 2: Female, 38 years old, “sudden onset of dizziness with right limb hemiparesis for 3 hours”, the patient had symptoms of chest tightness and shortness of breath for the past 5 years, and had been seen in a small local clinic without regular treatment. After admission, the patient was found to have rheumatic heart disease, heart valve disease, combined atrial fibrillation and cardiac insufficiency, and was given a small dose of anticoagulation, but this time the cerebral embolism caused by the heart resulted in a large area and combined with bleeding and brain herniation (large irreversible damage to the brain), and eventually died. The lesson of this case is that heart disease is a common cause of stroke, and if standardized treatment (anticoagulant drugs or surgery) is given in advance, it can effectively reduce the occurrence of cardiogenic stroke. Case 3: Male, 60 years old, admitted to hospital with “recurrent inability to speak with right-sided dyskinesia for half a day”, each episode lasting 20-30 minutes. The patient was treated with antiplatelet aggregation and lipid-lowering therapy to stabilize the plaque, followed by cerebral angiography and placement of a carotid artery stent in the stenosis. The lessons learned from this case are: early diagnosis and early treatment based on standardized control of high-risk factors, and reasonable control of neurosurgical intervention indications (such as internal carotid artery stripping or stenting) can effectively reduce the recurrence of severe ischemic strokes.