Especially, chrysanthemum tea plays a great role, and Lan Ju acid is the most important immunoreactive substance discovered by human beings. Lan Ju acid directly acts on "granulocytes" of human body, activating neutrophils and macrophages in the body; It makes activated neutrophils penetrate the blood vessel wall and enter the cell tissue to play a role-reducing the contents of endothelin and thromboxane. Among them, PG-I2 (prostacyclin) synthesized on the premise of arachidonic acid is the best antithrombotic antagonist, which has strong vasodilating effect and anti-platelet aggregation ability. The increase of prostacyclin is obviously manifested in changing the ratio of prostacyclin to thromboxane, effectively reducing the contents of total cholesterol and triacylglycerol, optimizing the ESR and ESR equation K value, and finally reducing the viscosity of whole blood and plasma.