Abstract: To obtain chemical constituents from the flowers of Cancrinia discoidea(Idb.)Pok,in this paper the methods of water extraction,ethanol extraction and petroleum ether extraction were used.Protein,amino acid,carbohydrate,alkaloid and organic acid wore tested in the water extracts.Phenol,organic acid,volatile oil,flavonoid and alkaloid were tested in the ethanol extracts.Alkaloid was found in the acid extracts.Petroleum ether extracts were mainly used for the testing of volatile oil,steroid, oil and fat,lactone and coumarin.

Key words: Cancrinia discoidea(Idb.) Pok, water extraction, ethanol extraction, petroleum ether extraction