Mold during pregnancy is usually referred to as mycosis vaginalis, or Candida vaginitis. Candida is a conditional pathogen, which means that it does not cause disease when the body’s immune function is normal, but only when the body’s immunity is low or when the local environment is changed. Pregnant women have increased hormone levels after pregnancy, which leads to changes in the vaginal environment and lower vaginal pH, making it easier for Candida infections to occur when the body’s immunity is low, i.e. mycobacterial infections, leading to mycosis fungoides. In addition, the increase in vaginal discharge during pregnancy and the poor hygiene of the perineum of some pregnant women can also lead to the growth of pathogenic bacteria, including Candida and bacteria, which can cause inflammation. During pregnancy, pay attention to the cleanliness and dryness of the vulva and prohibit sexual intercourse during the early and late stages of pregnancy. If the mycosis is very serious, it is recommended to go to the hospital for further consultation and use topical vaginal medications, including suppositories of mycoplasma and miconazole, under the guidance of the doctor.