High body temperature in pregnant women may be a normal physiological phenomenon due to hormonal changes in the body, or it may be a pathological phenomenon caused by cold and flu, etc. The diagnosis can be assisted by blood tests to clarify the cause and treat the cause. Common causes: 1. Physiological factors: after pregnancy, pregnant women secrete a large amount of estrogen and progesterone in their bodies, which increases blood volume, while blood circulation and metabolism are also accelerated, resulting in an increase in body temperature; 2. Pathological factors: when cold, bacterial or viral infections lead to colds, pregnant women can have symptoms of high body temperature. Second, treatment methods: 1, physical cooling: applicable to pregnant women with body temperature below 38.5 ℃, can use ice bags, warm water bath, but it should be noted that pregnant women should not use cold behind the neck, forehead, abdomen and soles; 2, drugs: applicable to pregnant women who are more than 3 months pregnant. It is recommended that pregnant women promptly go to the hospital for blood biochemical and routine tests to find out whether it is a bacterial infection or a viral infection. If the temperature is caused by bacterial infection, symptomatic treatment with anti-inflammatory drugs, such as penicillin, can be used under the guidance of a doctor. If it is a viral infection, oral antiviral drugs, such as Banlangen granules or antiviral Chinese medicine, can be used under the guidance of a doctor. Third, precautions: pregnant women with high body temperature, it is recommended to drink more water, eat light food, supplemented by physical cooling, do not take their own fever-reducing drugs, so as not to affect the development of the fetus.