Patients with gestational diabetes have different constitutions, ages, and weights, so their clinical symptoms also vary greatly. The more typical symptoms include the obvious "three polys and one less," namely polyuria, polydipsia, polyphagia, and unintended weight loss. Pregnant women are prone to recurrent vulvar infections and itching. Some patients with gestational diabetes may not show obvious symptoms, while others may experience a series of adverse symptoms such as excessive amniotic fluid, vulvar itching, and ketoacidosis. If blood sugar is not well-controlled during pregnancy, it can cause delayed growth and development of the fetus. Gestational diabetes can pose significant risks to both the fetus and the pregnant woman. Therefore, timely diet, exercise, and appropriate insulin treatment should be administered.