Increased blood flow velocity in the middle cerebral artery caused by coughing in patients with coronary artery disease is usually related to blood vessel stenosis, vasospasm and other factors, which can be treated conservatively and surgically to control the condition. 1. Vascular stenosis: mainly refers to the narrowing of blood vessels resulting in a smaller lumen, which may suddenly increase the blood flow rate when stimulated, easily causing headache, head swelling, rapid heartbeat and so on. Aspirin, clopidogrel and other anti-platelet drugs should be taken orally as soon as possible as prescribed by the doctor. 2. Vascular spasm: coronary heart disease patients affected by coughing, may be due to vascular spasm and lead to increased arterial blood flow rate. At this time, it is necessary to reduce the irritating response, and away from the causative factors. If the degree of spasm is more serious, can be combined with vasodilator treatment, such as cipro, nitroglycerin, sodium nitroprusside and so on. Coronary artery disease patients coughing leads to increased blood flow in the middle cerebral artery, causing dizziness, headache and other symptoms, should immediately consult a doctor, to avoid delaying the condition of cerebral vascular rupture. When taking medication, be sure to strictly follow your physician’s instructions.