Medications are used with caution during pregnancy because many medications can adversely affect the fetus causing malformations. However, if you have a fever during pregnancy, persistent high fever can also cause changes in fetal heart rate and blood oxygen, thus affecting the development of the fetus. If the body temperature is over 38℃, you can take oral acetaminophen to reduce fever. Drink plenty of fluids and wipe the forehead, armpits and thighs with lukewarm water to lower the fever physically. Fever-reducing treatment at the same time to check the blood routine, C-reactive protein, calcitoninogen and so on. To understand the degree of inflammation, timely anti-infection treatment, pay attention to rest, to prevent re-exacerbation of the disease by cold.