Tea and rock sugar can be drunk together, eaten in moderation can supplement some of the body’s nutrients, but should not be drunk in large quantities, diabetic patients should be careful to eat rock sugar. Tea and rock candy can generally drink together, generally every 100 grams of tea contains 99.8 grams of water, 0.1 grams of dietary fiber, 1 mg of magnesium and other nutrients; every 100 grams of rock candy contains 99.3 g carbohydrates, 0.6 g of water, 0.1 g of ash and other nutrients, tea and rock candy can provide the body with the nutrients it needs. However, tea and rock candy should not drink more, to avoid bloating and other gastrointestinal symptoms. In addition, diabetic patients should be careful to eat icing sugar, to prevent the rise in blood sugar due to excessive sugar intake.