Dry mouth during pregnancy and drinking water does not quench the thirst, may be physiological factors, may also be caused by diabetes during pregnancy. It is recommended to improve bad eating habits, go to the hospital for blood sugar monitoring, and give medication if necessary. 1. Physiological factors: women’s thirst during pregnancy is related to the body’s serious lack of water, the intake of spicy and stimulating, high salt food, the body sweats more. It is recommended to increase the amount of water consumption, reduce the intake of stimulating foods and avoid excessive sweating, which can help to improve. 2. Diabetes: prolonged dry mouth, drinking water can not relieve thirst, need to go to the hospital for blood glucose monitoring. If it is caused by diabetes, you need to control the intake of sugary foods, conduct regular blood glucose checkups, and give insulin to control blood glucose levels if necessary. It is recommended to pay attention to water supplementation to avoid severe dehydration. Regular testing of blood glucose levels can also help improve symptoms.