Blood sugar may rise after eating raw tomatoes. Eating raw tomatoes may cause the patient’s blood glucose value to rise, however, due to the tomato’s glycemic index is less than 15, belonging to the low glycemic index of food, moderate or small amount of tomatoes generally do not have a large fluctuation in blood glucose value. In addition, tomatoes are also rich in vitamin C, vitamin B, carotene and other nutrients, the flavor is also refreshing sweet and sour, with laxative, promote digestion, increase appetite and other functions. Therefore, diabetic patients consume tomatoes, there are certain benefits to the body, but should avoid eating a large number of them, so as not to aggravate the burden on the gastrointestinal tract. In daily life, diabetic patients should choose a healthy diet, choose a low-salt, low-sugar, low-fat diet, which will help blood sugar control.