During pregnancy blood sugar is throughout the whole process of pregnancy, no matter to which time of pregnancy, if the blood sugar is high should be strictly controlled, high blood sugar not only has a serious impact on the pregnant woman itself, for the fetus is also relatively large, to 37 weeks of pregnancy if blood sugar is relatively high, or should be controlled. First of all, the measures should be taken to control the diet, especially sweets, such as fruits, snacks, drinks and rice should be strictly controlled, and eat as little as possible, the impact on blood sugar is relatively large. Secondly, if the blood sugar level of pregnant women is still relatively high after paying attention to diet, they can only take insulin treatment to keep the blood sugar within a more stable range, which is safer for the fetus and the pregnant women.