Grass nut is cardamom.　Grass nutmeg: It is also called grass nutmeg, grass nutmeg, grass nutmeg. For the ginger plant grass nutmeg mature seed mass. Summer and fall fruit harvested when ripe, sun to 8 ~ 9 into dry, peel off the skin, take out the seed clusters, sun-dried. It is pungent in taste and warm in nature, and belongs to the spleen and stomach meridians, with the function of drying dampness and moving qi, warming the stomach and stopping vomiting. Dosage: decoction, 3~6 grams. Because it is rich in volatile oil, it should be crushed when it is used, and it should be put down after it is put into the soup.　Cardamom: also known as cardamom, shell cardamom, cardamom. For the ginger plant cardamom and Javanese cardamom ripe fruit, July to August fruit ripe, cut off the cob, sun-dried or roasted. Taste pungent, warm, attributed to the lung, spleen, stomach meridian. Functions: Promoting circulation of qi, removing dampness, warming the body, stopping vomiting, appetizing and eliminating food. Favor appetizing and eliminating food. Dosage: decoction, 3-6 grams. It should not be decocted for a long time because it contains volatile oil. When decocting, the cardamom is broken or crushed, soaked for 30 minutes, then down, decoction can be boiled for about 10 minutes, or studied into a fine powder to swallow. Its fruit shell decoction can inhibit Shigella, dysentery bacillus, etc., on bacterial diarrhea has a certain efficacy for medicinal purposes.　Nutmeg: alias cardamom, meat fruit, jade fruit, for the nutmeg plant nutmeg seed kernel of the Myristicaceae. Its seed kernel at 45 ℃ low temperature slowly roasted dry, remove the oil (mainly to reduce the toxic myristyl ether, safrole), when the seed kernel shaking the sound can be. Pungent in flavor, warm in nature, belonging to the spleen, stomach and large intestine meridians. Functions: Moving Qi and removing dampness, warming the middle Jiao, astringing the intestines and stopping diarrhea. Dosage: decoction, 3 to 10 grams. Contains volatile oil, so should not be decocted for a long time. Advocate research into fine powder, each 1.5 ~ 3 grams, can avoid the loss of volatile oil caused by decoction. Overdose of nutmeg, can cause serious toxic reactions, should be noted.