There is no non-glycemic staple food, but at night you can eat miscellaneous grains, coarse grains and other staples with high fiber content, which are absorbed slowly and raise blood sugar more slowly. People with high blood sugar should focus on diets with low sugar, low fat and low calories, and at night they can choose foods with high fiber content such as miscellaneous grains and coarse grains as their staple foods, such as quinoa, noodles, brown rice and purple rice, etc. In addition to paying attention to staple foods, they should also eat small meals, chew slowly, avoid fried foods, eat vegetables and fruits with low glycemic index in moderation, and eat more foods rich in protein. People with high blood sugar can consult a nutritionist to develop an individualized diet plan under the guidance of a doctor.