The effects of different gynecological infections during pregnancy preparation are different. Firstly, if vaginal inflammation is not controlled or treated in a timely manner, it is likely to lead to infectious miscarriage if retrograde infection is caused. Secondly, in case of pelvic inflammatory disease, repeated pain in the lower abdomen during pregnancy preparation will often cause uterine contractions, which may lead to miscarriage in case of pregnancy. Therefore, if gynecological inflammation is detected during pregnancy preparation, it is recommended to give active treatment. A comprehensive clinical consideration is that if pregnancy medication affects the fetus, so it is important to treat with medication that has no or less effect on the fetus. In addition, if inflammation is found during pregnancy preparation, it is best not to have intercourse and to postpone pregnancy preparation, and to consider pregnancy after it is cured.