Diet-induced high and low blood glucose can be treated by adjusting the diet. Eating a lot of high-sugar and high-fat food in daily life can cause a rapid rise in blood glucose after meals or irregular diet can lead to high and low blood glucose. In such cases, you should maintain a regular diet, avoid eating a lot of cakes, milk tea, fried chicken and other high-sugar, high-fat foods, and choose low glycemic index foods, such as corn, spinach, apples, cherries and so on. In addition, for diabetic patients, if the use of hypoglycemic drugs is not standardized, such as self-adjustment of the dose of medication, can also cause blood glucose fluctuations, such cases need to be standardized under the guidance of the doctor to use drugs. In such cases, the use of medication should be standardized under the guidance of a doctor. In the case of diet-induced high and low blood glucose, it is recommended to go to the hospital after dietary adjustments if there is no improvement.