How many raisins a day to eat in the clinic does not have a strict limit on the number of pieces, moderate amount can be, generally recommended 20 to 30 grains a day. The nutritional value of raisins is relatively high, per 100g raisins mainly contain protein 2.5, carbohydrate 83.4g, calcium 52mg, phosphorus 90mg, potassium 995mg, magnesium 45mg. It is generally recommended that the amount of raisins eaten in a day can be controlled at 20~30 grains, which can satisfy the nutrients needed by the body, quickly replenish energy and maintain the normal physiological function of the organism. The carbohydrate content in raisins is high, and carbohydrates are the main source of blood glucose production. If excessive consumption of raisins can easily lead to elevated blood glucose in diabetic patients.