Pregnancy with sour mouth can be relieved by paying attention to diet, paying attention to oral hygiene, appropriate activities and other methods. 1. Pay attention to diet: eat less food that is easy to produce acid, such as sweet potatoes, potatoes, etc.; eat less cold food; eat less and more meals; eat easily digestible food. When the mouth is sour, you can eat some soda crackers and drink some warm water and milk to relieve it. 2. Pay attention to oral hygiene: pay attention to gargle diligently, when you feel sour mouth, you can relieve it by gargling. 3. Appropriate activities: to maintain appropriate activities to promote gastrointestinal peristalsis and reduce the production of acid. If the symptoms of sour mouth in pregnancy have not been relieved, or there is aggravation, accompanied by abdominal pain and diarrhea and other manifestations, you should immediately seek medical attention, standardized treatment under the guidance of the doctor, do not take medication without authorization.