Iron stick yam that is for Huai yam, Huai yam is yam, because it is the Taoist medicinal herbs efficacy slightly better than other places of origin, medicinal value is yam can complement the spleen and stomach, the birth of the Tsuyoshi benefit lungs, tonifying the kidney and astringent essence. Yam is sweet in flavor and flat in nature, and belongs to the spleen, lung and kidney meridians. It can be used to treat spleen deficiency with little food, prolonged diarrhea, lung deficiency with wheezing and coughing, kidney deficiency with spermatorrhea, dyspareunia, frequent urination, deficiency heat and thirst. Among them, fried yam can replenish the spleen and strengthen the stomach, and is used for spleen deficiency with little food, diarrhea and loose stools (thin and unformed stools), and excessive leucorrhea. It should be noted that the effect of a single Chinese medicine is weak, and other medicines can be used together under the guidance of Chinese medicine practitioners in order to achieve the best therapeutic effect. It is recommended to take yam for the treatment of diseases under the guidance of a doctor.