The contraindication to taking Icariin is that the use of this medicine is prohibited for patients with yin deficiency and fire exuberance. This drug is aromatic and dampness drugs, so it should not be decocted for a long time, so as not to affect the efficacy of the drug. Patients who need to use this drug, should be under the guidance of the doctor, not unauthorized use of medication to ensure the safety of medication. Patchouli, taste pungent, slightly warm, with aromatic turbidity (with aromatic properties of the drug to get rid of dampness), and stop vomiting, published the efficacy of summer heat, in the clinical treatment of dampness in the obstruction of summer dampness, dampness and temperature (feeling dampness and heat caused by the temperature of the disease) at the beginning of the fever and tiredness, tightness of the chest uncomfortable, abdominal pain, vomiting and diarrhea, nasal abyss (the main manifestation of the obscene nasal mucus, the amount of wipe unclean), and other conditions. Pogostemon cablin treats vomiting caused by dampness and obstruction, and is often combined with hemixia and cloves. If it favors dampness and heat, it is used together with Huanglian and Zhu Ru; for vomiting in pregnancy, it is used together with Sha Ren and Su Stem; for weak spleen and stomach, it is used together with Dangshen and Atractylodes Macrocephalae.