A pregnant woman with a bad half tooth that is about to fall out can leave it untreated for the time being if there is no obvious pain; if the tooth shows signs of pain, root canal treatment or extraction can be carried out during the 4th to 6th month of pregnancy, a period when treatment is relatively safe. Early pregnancy, i.e. the first 3 months of pregnancy, is an important period for embryonic development. At this time, the pregnant woman’s bad half tooth is about to fall out, you can first do a dental examination If the patient does not have obvious pain, swelling and other symptoms, can be filled or temporarily conservative treatment. Because blind medication after pregnancy will affect the fetus. However, if the symptoms of pain and discomfort are serious, it is recommended to go to a regular dental examination and choose the appropriate treatment according to the specific situation. Teeth can be treated in mid-pregnancy, that is, during 4 to 6 months. If there are symptoms of pulpitis, root canal treatment is needed; if the symptoms are serious, extraction can be carried out under local anesthesia, which is relatively safe during this period. Patients should follow the doctor’s instructions to actively cooperate with the doctor’s treatment, do not self-medication, so as not to delay the condition or lead to adverse reactions.