OBJECTIVE： To classify the drug properties of Compositae involved in effective patent of TCM extract combination. METHODS： Property， flavor and the meridian tropism of TCM were used as the parameters； by computer analysis software， fuzzy cluster analysis was conducted from Compositae mostly involved in effective patent of TCM extract combination which approved before Jan. 1st in 2015 and kept till May 30th in 2015. RESULTS & CONCLUSIONS： 27 ingredients of Compositae were involved with the functions as protecting liver almost. They were classified into 5 categories. The first category included 10 ingredients as Dendranthema morifolium which were cold， bitter to taste， and in the liver and lung meridian， and all of them contained flavonoids compounds； the second category included 3 ingredients as Gnaphalium affine of which flavonoids compounds were main medicinal components； the third category included 5 ingredients as Atractylodes lancea which could protect liver and contained volatile oil； the forth category included 4 ingredients as Tussilago farfara which showed anti-inflammatory and anti-tumor effect； the fifth category included 5 ingredients as Erigeron breviscapus which contained ingredients for cardiovascular disease. Those categories were similar not only in property， flavor and the meridian tropism， but also in active ingredients and effects. The researchers should further research TCM of which pharmacologic action are not well understood， by means of make reference to known TCM in the same category， and make preparation to save time and enlarge medicinal resource.