Pregnant women should not use anthralin during pregnancy, because pregnancy is a special physiological period for women, and the secretion of various hormones and enzymes in the body during this period will be different from that of normal people in a normal state. Most of the antifreeze contains a kind of substance called camphor, and there is an enzyme in the body of normal body state, which can be combined with camphor and then excreted, so it is non-toxic, but the secretion of such enzyme in the body of pregnant women may be very little, so it will cause such substance in antifreeze to affect the body of pregnant women, and it will also act on the fetus, and the fetus will be stimulated externally and its own development will be abnormal. The fetus will be stimulated by the outside and its development will be abnormal, so pregnant women should not use windex during pregnancy.