Mycobacterial infections during pregnancy may cause premature rupture of membranes, increasing the likelihood of preterm labor and increasing the risk of thrush in the fetus. Mycobacterial infections in pregnant women are limited and superficial and do not directly infect the fetus. However, the mold may cause disruption of the cervical and vaginal flora, which in turn lowers their resistance, which may result in premature rupture of membranes and preterm delivery of the fetus. During delivery, if mold gets into the mouth of the fetus, it can increase the risk of thrush. It is recommended that vaginal secretions be examined regularly during pregnancy. If a pregnant woman suffers from mold infection, she needs to be actively treated under the guidance of her doctor, and in addition, she should strengthen her own resistance in her daily life to reduce the possibility of mold infection.