Although fruit juice contains a lot of vitamins but still contains sugar, carbohydrates, belong to the sweet food. Sugar will be converted into fat, if a long time to drink at night will lead to fat accumulation in the body flab generation, weight gain leading to obesity, it is recommended to drink at noon or between meals to drink so that more healthy. Drinking fruit juice for a long time will also cause elevated blood sugar to health damage, weight control should be diet control and exercise. Usually to eat a light diet and eat more high-quality protein foods, such as eggs, lean meat, fish, chicken, eat more crude fiber foods, such as oats, corn, eat more vegetables and fruits. Avoid overeating, regular work and rest, go to bed early and get up early, avoid staying up late to ensure adequate sleep, more exercise after meals, if the diet does not control the amount of exercise is small, will also lead to weight gain obesity. It is recommended to monitor blood glucose, blood lipids, blood pressure, to avoid the body in a state of sub-health.