Pregnant women suffering from mouth ulcers, because pregnant women in pregnancy, so generally not suitable for taking drugs, you can use a light diet, oral vitamins or apply iodized glycerin, as well as gargling astringent to promote healing. Pregnant women who have mouth ulcers during pregnancy are not suitable for oral medication, because this will have an impact on the fetus. We can use: 1. usually focus on light diet, do not eat too hot or spicy food, so as not to produce stimulation of the oral mucosa, and pay attention to balanced nutrition. 2. In general, you can focus on taking some vitamin C and vitamin B12, or consume some fruits and vegetables that contain more of these vitamins. 3. You can also go to the local oral health care institutions in the oral mucosa ulcers coated with iodized glycerin, iodized glycerin has a soothing and analgesic effect, but after the coating half an hour can not gargle and eat, so as not to affect the efficacy of the drug. 4. You can also gargle through the use of rehabilitation of new liquid or chlorhexidine, etc., to maintain oral hygiene. Mouth ulcers in pregnant women is a slow process, we can accelerate the healing of ulcers through some ways, such as light diet, vitamin supplement, iodized glycerin coating, gargling and so on.