Sweet potato leaves have health functions such as improving immunity, stopping bleeding, lowering sugar, detoxifying, and preventing night blindness. Regular consumption has the effect of preventing constipation, protecting eyesight, but also can keep the skin delicate, delay aging. The materia medica also has records, that sweet potato: "cool blood and blood, wide stomach, constipation, to go to the stasis of dirty poison." Chronic constipation is particularly suitable for those who eat, but also available fresh sweet potato leaves 250 grams, oil, salt stir-fry to eat, once eaten, morning and evening on an empty stomach, suitable for people with dry stools. Proverb: "meals with sweet potato, Yung Puff".