Nine sections of calamus and calamus in the family, flavor, efficacy and other aspects of the difference, specific take should follow the doctor’s instructions, according to the disease for argumentation, not blindly self-medication. 1. Different families: nine sections of calamus although named calamus, but does not belong to the genus calamus, but belongs to the buttercup family of buttercups, buttercups for the dry rhizomes of plants Altair silver lotus; Calamus belongs to the family of plants, which is the dry rhizomes of Calamus. 2. Different tastes: nine sections of calamus taste pungent, warm to the heart, liver, spleen; Calamus taste pungent, bitter, slightly warm, to the heart, liver, spleen. 3. Different efficacy and treatment: Calamus has the efficacy of opening the orifices, removing phlegm, awakening the spleen and tranquilizing the mind, which is used for the treatment of fever, epilepsy, neurosis, tinnitus and deafness, chest tightness and abdominal distension, loss of appetite, and external treatment of carbuncle and gangrene (a kind of poisonous sores, which occurs in the surface of the body, the limbs, and the internal organs of the acute suppurative disease), sores and ringworm and other illnesses. Acorus calamus has the effect of opening the orifices and opening phlegm, waking up the spirit and wisdom, resolving dampness and opening the stomach (through the elimination of dampness to make the gastrointestinal function normal), and is used for the treatment of fainting and epilepsy, forgetfulness and insomnia, tinnitus and deafness, epigastric rumpus and no hunger, and silencing of the mouth and dysentery and other diseases. The adverse reactions and contraindications of both drugs are still unclear, attention to yin deficiency and hyperactivity (deficiency of yin fluid, hyperactivity of yang qi), irritability and excessive sweating, seminal slippage of the person who should be careful to take these two drugs. It is recommended to use under the guidance of a doctor, do not self-medication.