Pregnant women’s mouth ulcers are a common clinical disease, multi-morbidity, the reason for this is mostly twofold, one is because of irregular diet and eating fatty, oily, spicy and stimulating products, resulting in a larger upward movement of stomach fire mouth ulcers, the other is because pregnant women bladder pressure, prone to urinary frequency and urgency, so drink less water, so the lack of water intake leads to fire upward movement of mouth ulcers. 1, pregnant women because of the pregnancy of the fetus, often appear appetite, good food high protein food, and vegetable and fruit intake is often insufficient, so it is easy to lead to less vitamin intake, and then appear mouth ulcers, sore throat and other performance of the stomach fire, it is recommended that such pregnant women should eat more vegetables and fruits, in addition, you can take oral multivitamin pregnant women to improve the symptoms. 2, such as pregnant women because of spicy stimulation and other heavy food and irritating mouth ulcers, it is recommended that the intake of these foods should be reduced, pay attention to the three meals light, so as to effectively reduce the mouth ulcers. 3, if a pregnant woman has a mouth ulcer because she drinks less water, it is recommended that she should walk more and move more, and drink water a few times to avoid too little water intake and mouth ulcer performance. Pregnant women with mouth ulcers do not eat food because of pain in the mouth and tongue, eat less and more, you can drink some vegetable porridge and other easily digestible food, such as symptoms continue to aggravate without improvement, it is recommended to consult the Department of Dentistry for examination and treatment.