If the pathogenic bacteria are detected in the routine vaginal discharge examination, vaginitis can be confirmed and vaginal pessary treatment can be chosen according to the detected pathogenic bacteria. It is best to test the progesterone and human chorionic gonadotropin values and to treat the fetus according to the test. Early pregnancy is a critical period for embryonic cell differentiation, which is susceptible to pathogenic infections or other physical and chemical factors, resulting in abnormal embryonic development. During the period of fetal preservation treatment, it is necessary to pay attention to rest, if necessary, bed rest, need to use medication under the guidance of the doctor, do not use drugs indiscriminately, and prohibit sexual life.