The treatment principle for gestational diabetes is to control blood sugar and then ensure the normal development of the child. There are many methods to control blood sugar. First, it involves diet management guided by a doctor, adjusting the diet's structure and quantity, followed by post-meal exercise. If after a week of adjusted diet and post-meal exercise, blood sugar levels still do not meet the standards, insulin injections can be used to keep the pregnant woman's blood sugar within the prescribed range. This can help reduce the impact of diabetes on the fetus and the pregnant woman.