Moderate consumption of concentrated fruit juice is not harmful, but long-term consumption of large quantities of concentrated fruit juice may lead to the loss of nutrients, while increasing the incidence of dental caries, obesity, diabetes and other health problems. Fruit juice concentrate is squeezed into the original juice in the fruit and then use low-temperature vacuum concentration method, evaporate part of the water produced into the original fruit color, flavor and soluble solids products. Which contains fruit sugar, fiber, vitamins and other nutrients, moderate consumption, no harm to the body. However, fruit juice concentrate in the preparation and processing process, after layers of technical processing, which the B vitamins, vitamin C and part of the minerals lost serious, not as rich as the nutritional value of fresh fruit. At the same time, fruit juice concentrate in the process, due to its high sweetness, will make people unknowingly ingest a lot of fruit juice, long-term large-scale drinking will increase the risk of obesity, but also can further cause hyperlipidemia, hypercholesterolemia, coronary heart disease, diabetes and other diseases. Part of the concentrated fruit juice added sugar, the sweetness itself is also higher, long-term drinking will make the teeth decalcification, the formation of dental caries, especially for teenagers more obvious impact. Concentrated fruit juice is not fruit, can not replace the nutritional value of fruit, usually recommended to choose more natural fruit.