Raisins are the fruit of grapes dried in the sun or in the shade. The water content of raisins is only 15-25%, and its fructose content is as high as 60%, which can be preserved for a long time. Its nutritional value is dominated by glucose, and the fruit acids it contains help digestion, with the effect of strengthening the spleen and stomach. In addition, grapes also contain minerals calcium, potassium, phosphorus, iron and a variety of vitamins B1, B2, B6, etc., but also contains a variety of amino acids needed by the human body, eating grapes on neurasthenia, fatigue is very beneficial. After the grapes made of raisins, sugar and iron content will be relatively high, is women, children and weak anemia nourishment.

China's successive medical books on the medicinal use of grapes have been discussed. Chinese medicine believes that grapes are sweet and slightly acidic, flat, with the liver and kidney, beneficial to the qi and blood, open the stomach force, the production of fluids and the effectiveness of urination. The Divine Husbandman's Classic of the Materia Medica, said: grapes, "the master of the sinews and bones of paralysis, beneficial gas, doubling the strength of the strong will, people are fat and healthy, resistant to hunger, enduring the wind and cold. Eat for a long time, light body not old and prolong life." Grapes not only have a wide range of medicinal value, can also be used for therapeutic purposes: dizziness, palpitations, cerebral anemia, drink the right amount of wine 2-3 times a day, there is a certain therapeutic effect; 15 grams of dried grapevine decoction can be used to treat pregnancy obstruction. Home must be used" has also recorded that grape juice has the function of removing annoyance and quenching thirst. Modern medical research shows that grapes also have anti-cancer, anti-cancer effect.