Stroke is divided into hemorrhagic stroke and ischemic stroke. Drugs to prevent stroke include the following 2 aspects, as follows: 1. Western drugs: patients can take drugs to lower blood pressure, blood lipids, soften blood vessels, and anti-free radicals to prevent hemorrhagic stroke, such as taking aspirin; 2. Traditional Chinese medicines: patients can take drugs to activate blood circulation and remove blood stasis, and to open up collaterals, such as Panax ginseng, Salvia miltiorrhiza, angelica sinensis, and safflower, together with ginsengs such as Codonopsis, Salviae sclerotiorrhizae and red ginseng, and qi replenishing drugs such as astragali, in order to prevent ischemic Stroke.