Patients with kidney yin deficiency are not recommended to take Cistanches, because it belongs to the category of tonics for kidney yang, but it is sweet, salty, warm in nature, belongs to the kidney and large intestine meridians, and has the effect of tonifying the kidney and benefiting the essence, laxative and laxative. It can nourish the liver and kidney, nourish kidney yin, lower blood pressure, improve immune function, and improve sexual function for men with infertility and spermatorrhea, and for women with coldness in the uterus and blood deficiency and infertility. If old age and weakness or postpartum blood deficiency lead to intestinal dryness and constipation, eating Cistanches can nourish Yin, moisten the intestines, and open the bowels.