Pregnancy generally does not have the symptom of dry mouth, which may be caused by physiological factors such as excessive loss of water in the body due to hot weather, and too little water due to increased need. Most of them can be relieved by drinking warm water in moderation and resting. It is not recommended to drink coffee, strong tea or other carbonated beverages during pregnancy. If the symptoms of dry mouth continue to be unrelieved and are accompanied by excessive drinking, excessive urination, generalized fatigue, yellowing of the skin, loss of appetite, nausea, vomiting, itching, abdominal pain and other symptoms, then it is necessary to go to the hospital in a timely manner to rule out the combination of diabetes mellitus in pregnancy, the liver, gallbladder, or thyroid function abnormalities such as disease fasting test, if necessary, you can also do a test of glucose tolerance, as well as urinalysis, liver and renal function, thyroid function, six, abdominal ultrasound, and other tests. If necessary, glucose tolerance test, urinalysis, liver and kidney function, thyroid function, ultrasound of the upper abdomen, etc. can also be done to identify the disease.