Fruit and vegetable juice does not have when to drink the best of this argument, generally any time you can, but relatively speaking, an hour after meals to drink better, specific varies from person to person. Fruit and vegetable juice at any time to drink, because the time to drink fruit juice generally does not affect the absorption of nutrients in the juice, but an hour after meals to drink not only can promote gastric secretion, but also help to promote gastrointestinal tract peristalsis. However, it should be noted that for people with poor gastrointestinal function, should try to avoid drinking on an empty stomach, because drinking fruit juice may stimulate gastric acid secretion and gastrointestinal tract peristalsis, which may cause discomfort. It is also recommended that fruit juice should be squeezed and drunk now to avoid storing it for too long and spoilage. Diabetic patients should control the intake of fruit juice.