The efficacy of Chinese yam powder: 1, can strengthen the spleen and appetite, because from the perspective of Chinese medicine food therapy, Chinese yam powder is sweet, flat, into the spleen, stomach meridian, for the spleen and stomach weakness caused by nausea, vomiting, loss of appetite, indigestion, abdominal pain, diarrhea, if appropriate consumption of Chinese yam powder, by nourishing the spleen and stomach meridian and has a good effect of strengthening the spleen and appetite. 2, can strengthen the kidney and benefit the essence, because from the perspective of Chinese medicine food therapy. The Chinese yam powder also enters the kidney meridian from the point of view of Chinese medicine, for the kidney deficiency caused by the waist and knee weakness, waist and leg pain, premature gray hair, frequent urination, urinary urgency, painful urination, if appropriate consumption of Chinese yam powder has a good effect of strengthening the kidney and benefit essence, alleviating the symptoms.