Tears in the birth canal in normal labor are mostly referred to as birth canal cracks, which may be caused by the relatively large fetus, abnormal fetal position, and the tightness of the soft birth canal. According to the anatomical position, there are cervical laceration, vaginal laceration and perineal laceration, which are treated differently in different positions. Those with serious lacerations need to be stitched up in time to stop bleeding, and medication should be used to prevent infection as prescribed by the doctor. 1. Cervical laceration: if the depth of the laceration is less than 1cm and there is no blood vessel rupture, no special treatment is needed and the laceration can heal naturally. If the depth of the laceration is more than 1cm or accompanied by rupture of blood vessels, it is recommended to be sutured to stop bleeding. 2. Vaginal laceration: Mild vaginal laceration does not need special treatment and can be healed. For deeper lacerations, or even lacerations to the rectum, stitches are needed, and postoperative anti-infection treatment is required. 3. Perineal laceration: Perineal laceration needs to be sutured. The phenomenon of birth canal laceration, if accompanied by redness, swelling and pain can also be used at the same time infrared treatment, oral antibiotics to prevent infection if necessary, commonly used drugs are cefixime, penicillin, etc., the specific medical practitioner according to the condition of how to decide to deal with.