1.What is glycemic index: Glycemic index (GI), also called glycemic index, is an index to evaluate the degree of influence of a food on blood sugar. 2.Grading of glycemic index: foods are graded according to their ability to affect blood sugar, that is, their glycemic index, and can be divided into three grades: low glycemic index foods: GI <55; medium glycemic index foods: GI between 55 and 70; high glycemic index foods: GI >70. When choosing foods, try to choose those with a small impact on blood sugar, that is, choose foods with a small glycemic index. That is, choose foods with a small glycemic index. 3, how to know the glycemic index of a food: refer to the book “Food Glycemic Index” compiled by the Nutrition and Health Food Branch of the Chinese Nutrition Society, which is the most authoritative and comprehensive glycemic index data in China. 4, mastered the meaning of the index: can make the dietary choices of sugar lovers to achieve stable blood sugar, justified.