Today, 60% of pregnant women are not satisfied with their oral health. The newly pregnant Zhou was recently tormented by toothache and had trouble sleeping all night long. Due to the pregnancy reaction, she is particularly fond of sweet and sour snacks, but every time she brushes her teeth, and nausea and vomiting, so she had to hastily do nothing, but did not expect the caries and gingivitis attacks in the past few days, and more painful is that many people warned her that during this period is prohibited to pull teeth and take antibiotics, otherwise it will easily lead to pre-eclampsia, and will affect the growth and development of the fetus. Pregnant women’s oral health is not only directly related to their own health, but also affects the development and health of the baby, and in serious cases can even lead to premature birth or low birth weight. Because, due to the endocrine change, the whole body of pregnant women will start a series of changes, the most common one is the pregnancy reaction, such as the love of sweet and sour snacks, eating less and more meals, coupled with nausea and vomiting, it is often difficult to insist on brushing teeth after each meal. Therefore, women who did not have caries or inflammation before pregnancy may suffer from caries and inflammation at this time, while those who already had caries and inflammation before pregnancy may have aggravated or increased symptoms. The gingivitis of pregnant women who have smoking habits will be more serious, leading to loose teeth and even increasing the risk of fetal malformation. Dental protection should start with pregnant women, and it should begin before pregnancy. It is best for pregnant women to go to a dental hospital for a comprehensive checkup and necessary treatment before they are ready to get pregnant to prevent the problem from happening. In addition, she also reminded that the best time to treat dental caries and gingivitis for pregnant women who already have dental disease is during the middle of pregnancy, i.e. between 4 and 6 months of pregnancy. However, it is still necessary to develop correct oral health care habits, such as brushing teeth in the morning and evening, rinsing mouth after meals; using dental floss regularly to clean plaque on adjacent surfaces; using health care toothbrushes with small brush heads, soft bristles and abrasive bristles, using fluoride toothpaste; and rinsing mouth after eating snacks, etc.