In the 2 weeks of pregnancy, pregnant women with fever over 39℃ lasting for more than 3 days, the medication may have no effect on the fetus at this time; in the 2 weeks of pregnancy or more, the central nervous system of the fetus has started to develop, pregnant women with high fever 39℃ may have an effect on the fetus if it lasts for 1 day; if it lasts for more than 3 days, it will definitely have an effect on the fetus; if the high fever 40℃ lasts for more than 1 day, it will definitely have an effect on the fetus , it is necessary to consider advising the pregnant woman to terminate the pregnancy. Therefore, when a pregnant woman has a heavy cold and high fever, she should control her body temperature as soon as possible. Physical cooling method should be used first, such as placing ice cubes on the forehead and neck, applying cold compresses with wet towels, or using 30%-35% alcohol (or white wine) to rub the neck and armpits on both sides. You can also choose medication to cool the body, but avoid aspirin and other drugs (aspirin should be avoided especially as an antipyretic agent in viral diseases). Paracetamol, ibuprofen, Chaihu injection, etc. can be used under medical supervision. Because hormones can inhibit the release of pyrogens and act directly on the temperature center, resulting in a rapid decrease in fever and a good antipyretic effect, they are often wrongly used by doctors as antipyretics. Hormones can make fever persist, further depress immunity, stimulate recurrent viral infections and combine with other bacterial infections, and their use is not advocated. Even in patients with hyperthermia causing convulsions, sedation may be added in moderation, and hormonal cooling is best avoided. FDA classification on safety in pregnancy: Paracetamol: B Ibuprofen: B; D in late pregnancy or near delivery (can prolong pregnancy and cause obstructed labor and prolonged labor). Aspirin: B; D when used in large quantities in late pregnancy. Also: Influnomide injection: prohibited for pregnant women. Perforunin injection: Pregnant women should use with caution. Angong Niuhuang Pill: prohibited for pregnant women. Waking Brain Jing Injection: prohibited for pregnant women. Chai Hu Injection: Pregnant women should use with caution. Qingkailing soft capsule: Pregnant women should use with caution.