Patients with gestational diabetes who initially have adequate blood sugar control do not need to be hospitalized; however, those with poor blood sugar control require further hospitalization for observation and treatment. In addition to diet and exercise, medication control such as insulin therapy is currently recommended for managing blood sugar in gestational diabetes. Insulin therapy must be used under strict medical supervision to avoid hypoglycemia. Since both high and low blood sugar levels can have a dual impact on pregnant women and fetuses, the need for hospitalization for patients with gestational diabetes mainly depends on their blood sugar levels.