In the early stages of pregnancy is not recommended to apply the wind oil essence, because the wind oil essence contains alcohol and flavorings and other chemical ingredients, if the pregnant woman in early pregnancy a large number of wind oil essence, pregnant women will be absorbed through the respiratory mucous membranes and the skin, the alcohol will pass through the placenta into the body of the fetus. In early pregnancy belongs to the sensitive period of fetal development, any external adverse stimuli may cause fetal development deformities, causing harm to the fetus, and the irritating odor of essential oil is very strong, sensitive pregnant women may occur airway allergies or asthma. As pregnancy is a special physiological period, it is not recommended that pregnant women blindly use drugs at this stage.