As people’s health consciousness and health concept increase, every year in the autumn and winter seasons, there are always patients, especially middle-aged and elderly patients with cerebrovascular stenosis or cerebral infarction, who come to the clinic and ask: is it time for infusion to “unblock the blood vessels”, what drugs are good to be infused, how much time is good to be infused, and so on and so forth. In order to answer such questions, we must know what effect the infused drugs have, how the cerebral vascular stenosis is formed, and whether there is any interrelationship between the two. 1, “unblocking cerebral blood vessels” drugs The so-called “unblocking cerebral blood vessels” commonly used drugs include Danshen, blood plug, Ginkgo biloba and other Chinese medicinal preparations. Salvia miltiorrhiza, also known as red ginseng and blood ginseng, has a bitter taste and is slightly cold in nature, cooling the blood and eliminating carbuncles, nourishing the blood and calming the mind. It activates blood circulation, inhibits platelet aggregation, lowers blood lipids, lowers blood sugar and improves the immunity of the body. Blood Seton: The ingredient is Panax ginseng total saponin, which is sweet in taste, slightly bitter and warm in nature, and belongs to liver and stomach meridians. It is used for resolving blood stasis and stopping bleeding, activating blood circulation and relieving pain. Ginkgo: also known as white fruit, sweet, bitter and warm, astringent and astringent. Modern research shows that it has anti-thrombotic, improve microcirculation effect, can resist lipid peroxidation, slow down aging. 2, the causes of cerebrovascular stenosis The common causes of cerebrovascular stenosis include atherosclerosis, vasculitis, vascular entrapment, smog, etc.. Among them, atherosclerosis is the most common cause of cerebrovascular stenosis in middle-aged and elderly people, and its mechanism is the damage of cerebrovascular intima cells, lipid deposition, fibrous tissue proliferation, local blood vessel wall thickening, official lumen thinning and even blockage. Hypertension, diabetes, hyperlipidemia, smoking and alcoholism are risk factors for cerebral atherosclerosis. Others such as obesity, lack of exercise, advanced age, and family history can also cause atherosclerosis. Through the above, it can be seen that all three drug components have a certain degree of anti-thrombotic effect, however, it is really beyond the power of preventing cerebral thrombosis and cerebral infarction through a short infusion.