High blood sugar in pregnant women is pregnancy diabetes. First of all, we should control the diet, according to the formula of pregnancy diabetes diet, calculate the calories contained in the food eaten every day, and then adjust the diet. You can also increase exercise, at least half an hour of slow walking every day. If you do not reach normal through these methods, you need to treat with insulin, because insulin cannot pass through the placenta, it has no effect on the fetus and can be safely applied. It is necessary to inject once a day half an hour before eating and then once more before going to bed, but the dose of insulin must go to the hospital and let the doctor calculate the amount of insulin according to the value of blood sugar before applying it.