Whether a pregnant woman with a cold will affect her fetus depends on the severity of the illness. If the symptoms of cold are mild and there is no persistent high fever, it will be blocked by the immune system of pregnant women’s body and will not affect the placenta, so it will not affect the fetus. At this time, pregnant women pay attention to rest, appropriate hydration, and keep the indoor air circulation, most of them can relieve themselves. If the symptoms of cold are serious, such as serious viral or bacterial infection, and the fever does not go away for a long time, it can affect the fetus through the placenta. If a pregnant woman’s body temperature exceeds 38℃ and she has symptoms such as chills, loss of appetite and difficulty in breathing, she should not delay and should go to the obstetrics and gynecology department in time. Women are usually in a state of low immunity during pregnancy, so it is recommended to exercise moderately during pregnancy to enhance their own physical fitness, pay attention to cold and warmth in general, and go out for good protection to avoid colds.