Some of China’s rural areas and even some urban areas spread of pregnant women during pregnancy and puerperium do not brush their teeth customs. In recent years scientists study found that birth weight less than 2,500 grams of babies, not only susceptible to various diseases, their weight and size until the adolescent growth retardation, congenital malformations and the merger or abnormal metabolism rate was as high as 15 percent (according to the World Health Organization data). What is particularly worrying is that these low birth weight infants when they grow up easily with coronary heart disease, hypertension, diabetes. In the United States recently held international academic conference on dental research, a report on 850 pregnant women in the 26 weeks before and two days after delivery to the oral examination, found suffering from periodontal disease in pregnant women, fetal growth and the risk of obstacles to a toothless Week two times in pregnant women. If the beginning of pregnancy with severe gum disease or severe periodontal disease, fetal growth and increased the risk of obstacles 6 to 10 times. And found that severe periodontal disease in pregnant women may be very premature and eclampsia. National survey data also showed that women suffering from premature serious gingivitis and periodontal disease are significantly higher than those without dental. Experts pointed out that the accumulation of plaque is the cause of gum disease, “Zuikui”, medical experts found that pregnant women with periodontal disease will cause amniotic, while the latter was born premature and low birth weight are closely related. Pregnant women during pregnancy and do not pay attention to oral health, such as daily brushing secondary right, postprandial mouthwash is often induced gingivitis or gum disease during pregnancy the main reason. Therefore, pregnant women vigorously promote oral health, pregnant women do not change the bad habit of brushing teeth, active prevention and treatment of dental Yun Qian and pregnancy, is to reduce prematurity, low birth weight infants of important measures, must not be taken lightly.