The specific action of poisons on the female organism can have various expressions. Women show higher sensitivity to certain poisons, giving a higher intoxication index and more severe forms of intoxication phenomena. Sensitivity to poison shows a special increase in women during pregnancy. Some poisons change the menstrual function. Chronic action of certain poisons disturbs the course of pregnancy and leads to miscarriages, premature births, and stillbirths. Chronic injury to the parents by certain chemical poisons leads to weakness, infirmity, and sickliness of the offspring, and to an increase in child mortality. In chronic intoxication of the mother by some chemicals, it is possible to demonstrate the material in the amniotic fluid and in the fetal organs. There has been very little research on the entire problem. In connection with the problem of allowing women to work in chlorine plants, the authors undertook a study on the effect of chlorine on the female organism. The report presents research results and discussions.