High blood sugar can eat yam. But we should pay strict attention to the following points, first of all, the yam itself contains a relatively high amount of starch, so eating too much yam may affect the patient, so under the premise of the patient’s blood glucose control is stable, you can eat yam appropriately. At the same time, if there is a case of eating yam, you can appropriately reduce the intake of other staple foods, so that you can largely maintain the calorie does not exceed the prescribed range. Secondly, to grasp a good way of cooking yam, can be stir-fried or cold, but try not to go to the deep-fried, fried and other incorrect way of cooking, will let the yam contains a significant increase in calories, which is also very unfavorable to the patient’s blood sugar control. So elevated blood sugar can eat yam, depending on whether the patient can grasp the above principles.