Black garlic can be consumed by diabetics, its intake should be controlled and long-term consumption is not recommended. Black garlic is a food made from fresh raw garlic, fermented in a fermenter with the skin on, and can be used as a seasoning in daily cooking. Each 100g of black garlic contains 53.6g of water, 41.4g of carbohydrates, 10.4g of proteins, and about 1,100KJ of calories. Therefore, diabetic patients can consume it appropriately, but they should control the amount of intake, and avoid eating more than one meal or consuming it for a long time. In addition to strict dietary control, diabetic patients also need to pay attention to dietary combinations and moderate exercise, which will help control the disease.