There are many causes of stroke, mainly including the following aspects: 1, vascular wall lesions: common such as atherosclerosis, arterial inflammation, congenital vascular disease and vascular injury, more internal factors, external factors, and a combination of factors can lead to damage to the vascular wall, which can lead to the occurrence of stroke; 2, cardiac disease and hemodynamic changes: for example, sudden hypertension, hypotension, or blood pressure Short-term fluctuations and cardiac dysfunction, etc.; 3, blood composition and blood rheology changes: such as hyperviscosity, common in dehydration, erythrocytosis, etc.; 4, abnormal coagulation mechanism: such as the use of anticoagulants and contraceptive pills, but also includes a variety of blood disorders can lead to changes in the composition of the blood; 5, other reasons: such as the air, fat, cancer cells, and parasitic embolism, which will lead to the occurrence of cerebral embolism. Occurrence. Cerebrovascular pressure, trauma, spasm, etc., can lead to the occurrence of stroke.