Sweet potatoes do not harm the liver, sweet potatoes have the effect of replenishing the deficiency and benefiting the qi, as well as strengthening the spleen and stomach, and strengthening the kidneys. In the clinic can through the sweet potato to assist in the treatment of related diseases, after a long time of oral sweet potato, can improve the human body’s immunity, can be anti-aging, for the supplementation of human body’s amino acids, for the protection of human body’s related functions, have very good curative effect. Sweet potato can also maintain the elasticity of blood vessels, for the prevention and treatment of atherosclerosis, remove the garbage in the blood vessels, have very big benefits. The application of sweet potatoes can prevent coronary heart disease, as well as cerebral thrombosis and other diseases caused by hardening of the blood vessels. Another big role of sweet potatoes is to laxative, for age-related constipation has a very good therapeutic effect, because sweet potatoes contain a large amount of dietary fiber, can stimulate the intestinal tract, enhance intestinal motility, so many people eat sweet potatoes after the exhaust will be very frequent.