Failure to correct hypoglycemia in pregnant women can affect the fetus. Pregnant women with low blood glucose will experience generalized weakness, discomfort, and cold sweats. When hypoglycemia persists, if timely intake of food to correct hypoglycemia, generally will not affect the fetus, but if not corrected in time, may lead to the body to break down fat for energy, the formation of ketosis on the fetus to a certain extent. If the pregnant woman’s blood sugar is too low for a longer period of time, the body’s reserve glycogen is low, it will cause fetal hypoglycemia, which will lead to fetal growth retardation and affect the development of the nervous system. If a pregnant woman is starved for a long time, it will lead to ketoacidosis, which can cause severe hypoxia in the fetus, resulting in intrauterine distress, and may even jeopardize the life of the fetus. Pregnant women are advised to take care of sugar supplements to increase their blood sugar levels. Candies and cookies can be carried with them for timely supplementation when symptoms of hypoglycemia occur.