The effect of high fever in pregnant women on the fetus? Fever or fever during pregnancy is a relatively common symptom, and many pregnant women encounter this situation, they worry whether it will affect the fetus In this regard, pregnant women with fever should have a targeted analysis. First of all, we should find the cause of any disease, for high fever during pregnancy, we should try to clarify the cause of the fever, the most common is the cold; in addition, lung infection, urinary tract infection and infection caused by premature rupture of fetal membranes are also common causes. The most common cause of fever is cold; besides, lung infection, urinary tract infection and infection caused by premature rupture of membranes are also common causes. Secondly, we should pay attention to the degree of high fever, a mild fever, for example, below 38.5 degrees, usually will not affect the fetus. Above 38.5 degrees, medication is needed. Clinically used antipyretic drugs including paracetamol (or antipyretic drugs containing paracetamol) can be used under the guidance of a physician. The use of acetaminophen-based antipyretics in small amounts is not considered to affect the fetus. In terms of fever alone, according to the available literature, it is generally believed that a cold or fever with a temperature above 39°C during the teratogenic sensitive stage of embryonic development (5-12 weeks after menopause) increases the incidence of birth defects, especially central nervous system anomalies, cardiac malformations, cleft lip and palate, and skeletal system anomalies, and the literature It has also been suggested that it increases the incidence of autism in children. Therefore, it is generally recommended that when the temperature of a pregnant woman approaches and reaches 39°C, cooling treatment should be given. To summarize: 1, when the fever is high, we should look for the cause as soon as possible, and treat the cause 2, low fever to take physical methods, high fever to take medication 3, timely control of body temperature, will not affect the fetus, do not needlessly worry