Newly renovated houses generally have formaldehyde, pregnant women living in a newly renovated house will be harmful, mainly reflected in the impact on the health of pregnant women, affecting the development of the fetus. 1. Affect the health of pregnant women. Newly renovated house in formaldehyde, lead, benzene and other harmful substances content is relatively more, long time in this environment may lead to physical discomfort, cause dizziness, nausea, skin itching, eye pain or damage to the respiratory mucosa, causing respiratory tract infections and other discomforts. 2. Affect the development of the fetus. Prolonged inhalation of formaldehyde, benzene and other harmful substances during pregnancy may cause poisoning during pregnancy, endangering the normal development of the fetus or triggering deformities, miscarriage and other abnormalities, especially in early pregnancy is a critical period of embryonic development, exposure to harmful substances on the development of the embryo has a great impact. Newly renovated house is recommended not to move in a short period of time, need to pay attention to open the windows and ventilation, if you move into a newly renovated house during pregnancy, you should do a good job of pregnancy test to observe the development of the fetus.