Toothaches in pregnant women can be treated, but the timing of treatment needs to be carefully chosen. Pregnancy period is divided into early pregnancy, mid pregnancy and late pregnancy. Early pregnancy refers to the first 3 months of pregnancy, this period is not suitable for tooth extraction treatment, you can do simple caries or local anti-inflammatory treatment, because tooth extraction treatment may induce early miscarriage. Late pregnancy refers to the second trimester of pregnancy, that is, the first trimester of delivery, which is also not suitable for tooth extraction treatment because it may cause premature delivery. The middle of pregnancy, which is between the 4th and 6th months of pregnancy, is relatively safe for dental treatment and simple tooth extractions or dental treatments can be performed during this period. Most toothaches in pregnant women are due to pulpitis caused by bacterial infection of the dental nerve. The pain is intense, sometimes even night pain or difficulty sleeping, and the pain can be relieved by opening the pulp and relieving the pressure, and root canal treatment of the tooth can also be performed after the acute phase is controlled.