The invention relates to 
ginkgo leaf tea and a preparation method thereof. The method comprises the following steps of: (1) 
cutting ginkgo leaves into 
ginkgo leaf threads, extracting ginkgo leaves with 
alcohol, preparing an 
alcohol filtrate, and concentrating; (2) 
grinding chrysanthemum, fiveleaf 
gynostemma herb and 
green tea into coarse 
powder, mixing coarse 
powder, and sterilizing; and (3) fully stirring and uniformly mixing a concentrated solution obtained in the step (1) and mixed 
powder, 
drying, sieving, and 
drying coarse particles and powder to obtain ginkgo leaf tea. In the tea components, fiveleaf 
gynostemma herb contains a plurality of gypenosides, and has the effects of lowering TC (
Total Cholesterol) and TG (
Triglyceride); ginkgo leaf contains flavone, and has the effect of lowering TC; fiveleaf 
gynostemma herb and ginkgo leaf co-act with each other, so that blood fat is lowered; chrysanthemum can be used for increasing high-density 
lipoprotein, lowering serum cholesterase and 
triglyceride acid, playing a certain role in adjusting blood fat, and adjusting 
flavor appropriately simultaneously; tea-
catechin in 
green tea is used for lowering serum cholesterase level by increasing the 
excretion of lipoid substances; and the four types of raw materials act in a synergistic way, so that a very good effect of lowering blood fat is achieved.