1, has the effect of strengthening the spleen to help digestion, yam contains amylase, can promote digestion of the gastrointestinal tract, and can be used to treat spleen yang deficiency;

2, can be used to tonify the kidneys, treatment of women's leucorrhoea, and other diseases;

3, has the effect of replenishment of the middle, beneficial to the qi, you can be strong and healthy;

4, there are the efficacy of the moistening of the lungs, stopping the cough, can be used to treat cough, phlegm and other diseases.