Laoying Tea as a famous traditional drinking tea is used in southern China .In Guizhou , Litsea coreana Lévl .var .
lanuginose (Migo) Yang et P .H.Huang and Actinodaphne cupularis (Hemsl.) Gamble are used as its original materials.
Comparing with the green tea the chemical compositions and contents of leaves in two original species of Laoying Tea , which were proteins, amino acids , vitamins , sugar, polyphenol, flavonoid et al , had been analyzed, no detectable amount of caffeine was found, nutrient constituents were plentiful.