Mirex is a pyrethroid pesticide, which is more toxic and harmful to pregnant women. If the body absorbs more, it will not only cause toxic reactions in pregnant women and endanger their health, but also affect the fetus in the womb, causing adverse reactions and affecting the healthy development of the fetus. Allergic reactions occur. Therefore, it is recommended that pregnant women should not be exposed to pesticides such as mirex during pregnancy to avoid adverse reactions or affecting the development of the fetus, resulting in miscarriage and other situations. If for some reason there is a small amount of exposure, it is advisable to do a good job of physical protection, such as wearing a mask to avoid absorption through the respiratory mucosa. It is also necessary to wear long sleeves and long pants, etc. It is best not to expose bare skin to direct contact, and to wash the body thoroughly and promptly after contact.