Raisins are a kind of food, and do not have any specific drug efficacy or role, so the biggest role of raisins in water is to help the body to replenish water and energy. Raisins are very rich in minerals, such as calcium, iron and other substances, and raisins contain a lot of sugar. 100g raisins of calories about 340 calories, belong to the high-calorie food; 100g raisins of calcium 50mg, iron 9mg. moderate consumption can help supplement the body’s required nutrients and minerals, can also be appropriate amount of water to drink tea to replenish water. It should be noted that raisins contain a lot of sugar, soak drink thick raisin water although it can quickly help the body to replenish energy, but diabetic patients or people with high blood sugar should not drink, so as not to adversely affect blood sugar control.