The isoflavone compound daidzein (daidzein, 4', 7-dihydroxyisoflavone, hereinafter referred to as D), as one of the main active components of pueraria and soybean, has obvious anti-arrhythmic, anti-hypoxic-ischemia, antispasmodic, Estrogen, promoting the formation of chemicalbook bone cells and inhibiting the growth of cancer cells. Tablets or capsules made of D are mainly used for the treatment of coronary heart disease, cerebral thrombosis, cerebral infarction and cerebral hemorrhage sequelae. It can also be used for high blood pressure. Neck pain, headache, dizziness and early sudden deafness due to blood pressure.