Black beans belong to low-sugar food, after eating black beans generally will not cause a significant increase in blood sugar, but high blood sugar patients once too much food will cause an increase in blood sugar. The glycemic index of black beans is not high, about 42, belongs to the low GI food, so after eating black beans, blood sugar will not rise too fast, too high, and black beans are also rich in vitamins, trace elements, proteins, dietary fiber, and other nutrients, so patients who need to control blood glucose can also be appropriate to eat black beans, which is conducive to replenish the nutrients, to maintain the health of the body. Patients who need to control blood sugar should not only do a good job of dietary management, but also need to be treated with medication under the guidance of a doctor if necessary.