(Disclaimer: This article is for general use only. To protect patient privacy, the information in the following content has been processed.) Abstract: The mother was 37 weeks + 5 days pregnant, had regular contractions for 10 hours and vaginal flow for 1 hour. The fetus was delivered on a stretcher at the time of emergency examination, but the mother had a third-degree perineal laceration and complete laceration of the anal sphincter. After routine disinfection, perineal repair and timely infection prevention measures, the mother recovered well and was discharged from the hospital. [Basic information] Female, 37 years old [Disease type] Perineal laceration of degree III and complete anal sphincter laceration [Hospital] Guangzhou Huadu District People’s Hospital [Consultation time] July 2015 [Treatment plan] Surgical treatment (perineal repair surgery) + medication (injectable penicillin sodium + indocin injection + motherwort capsule) + vulva cleaning care [Treatment cycle] Hospitalization for 10 days [Treatment Effect】The patient was clinically cured I. Initial consultation The mother was 37 weeks + 5 days pregnant, had regular contractions for 10 hours and vaginal flow for 1 hour, and came to our hospital urgently 10 minutes ago when she felt the fetus was delivered vaginally. The mother was weak at the time of admission and was carried into the ward on a stretcher. Her respiration was stable, body temperature was 37.3℃, pulse rate: 89 beats/min, respiration: 22 breaths/min, blood pressure: 120/78mmHg, no abnormality in cardiopulmonary auscultation, lower abdominal distension without obvious pressure pain and rebound pain, one transverse finger above the umbilicus of the uterus, the fetus was delivered on the stretcher, about 5cm long laceration wound was seen at the perineum, the perineum was Ⅲ degree laceration and the anal sphincter was completely laceration, there was dark red blood in the vagina. The umbilical cord was connected to the placenta in the uterine cavity, and the placenta was not delivered at this time. Routine blood examination: white blood cell count: 10.37×10＾9/L, hemoglobin: 121g/L, platelet count: 206×10＾9/L, and four normal coagulation items. The newborn weighed 3800g and was handed over to the nurse for treatment. The bleeding point of the wound was clamped, the wound was covered with sterile towel, and the placenta was delivered locally, and the placenta was delivered from the uterine cavity in about 30 minutes. The perineal laceration was more serious, and the perineal mucosa as well as the vaginal mucosa and anal sphincter were split in all layers. The rectum was palpated with the index finger, and the anal sphincter was sutured with a No. 10 silk suture. After suturing, the patient was instructed to contract the anus and feel the forefinger wrapping force, and then suture the muscle, subcutaneous fat, and skin. After surgery, strengthen the local care of vulva, scrub the local area with iodophor twice a day, eat a liquid diet, and try to have a dregs-free diet for the first 3 days, and give intravenous drip treatment with sodium penicillin for injection after surgery. At the same time, intramuscular injection of contractin injection was given to promote uterine contraction and eliminate blood stasis in the uterine cavity. After the perineal repair surgery, the suture site healed well, with no local redness or swelling and no abnormal exudation. The woman relieved a small amount of soft stool once on the second postoperative day, and no recto-vaginal fistula was found. The uterus contracted well, and the uterine fundus was examined one finger below the umbilicus on the second postpartum day, and there was not much bloody vaginal malignant fluid without any odor. We are glad that the mother recovered after the treatment, but we still remind her that she needs to strengthen local breast care and insist on breastfeeding. At the same time, she should keep her vulva clean, disinfect it twice a day with iodophor, change her sanitary napkin and underwear, strengthen her nutrition, but she should eat a light diet with more dietary fiber and protein, avoid constipation, and take motherwort capsules orally to promote uterine contraction. V. Personal insight The woman was a senior primigravida, without formal maternity checkups, four times throughout pregnancy, and did not attend maternity school before delivery. Because there were no other people accompanying her at home after she had regular contractions, she did not go to the hospital and was sent to the hospital only after her family came back.