Mouth ulcers in pregnant women can be treated with either general treatment or medication depending on the size or number of ulcers to alleviate the symptoms. 1. General treatment: If the mouth ulcers are small in size, you can gargle with saline or light salt water after meals to ensure oral hygiene and cleanliness. Avoid eating spicy and stimulating food during the period of mouth ulcers, so as not to aggravate the ulcers and affect the healing. Daily need to drink more water, eat more vegetables and fruits, to ensure that the vitamin intake. 2. Medication: If the mouth ulcers are large in size or have more than one quantity, you can use cediriodine tablets and so on. Pregnant women are a special group, the emergence of mouth ulcers is recommended to the hospital as soon as possible, all drugs should be used in strict accordance with the doctor’s instructions, do not recommend self-medication.