Pregnant women are not allowed to live in a freshly renovated house because of the high concentration of formaldehyde in the house, which is not conducive to their own health and that of the fetus. For the newly renovated house, the formaldehyde concentration is usually higher, so pregnant women are not allowed to live in it to prevent formaldehyde poisoning. Formaldehyde poisoning can cause pregnant women to experience dizziness, headache, weakness, burning sensation in the eyes, tearing, coughing, shortness of breath and other symptoms, and in severe cases, respiratory and circulatory failure, or even death, thus affecting the health of pregnant women. Formaldehyde is a chemical substance, and pregnant women living in a formaldehyde environment for a long time, may increase the chances of fetal malformations, such as congenital heart disease, cleft lip and palate, spina bifida, hydrocephalus, 21 – trisomy syndrome. Some pregnant women exposed to formaldehyde environment is also prone to preeclampsia, thus affecting the growth and development of the fetus, should be taken seriously. It is recommended to create a good living environment during pregnancy, open the windows and ventilation, and avoid exposure to radiation and chemical hazards. During pregnancy, you should consult a doctor on time for obstetric examination and closely monitor the growth and development of the fetus.