A more common cause of severe thirst in late pregnancy is gestational diabetes, which is manifested by increased blood sugar in the middle and late stages of pregnancy. When this occurs, it is best to check the blood sugar, and if it is high, it will also manifest itself as excessive drinking, polyuria, polyphagia, and loss of body weight. However, during pregnancy, if the condition is not particularly severe, no other symptoms appear and only thirst is manifested, symptomatic treatment in the form of diet control and increased exercise should be taken promptly. If the blood sugar is too high, you also need to promptly inject insulin subcutaneously to control blood sugar and reduce the symptoms, or if the weather is hot, such as excessive sweating resulting in excessive water loss in the body, the phenomenon of thirst will also occur, you need to moderate amount of water to relieve the symptoms, you should also eat fresh fruits and vegetables in moderation.