Whether or not a split lateral incision wound can heal naturally depends on the circumstances. If the perineal incision is open after delivery, if the wound is shallow or there is pus discharge, you need to go to the hospital to check whether there is infection. If there is infection, you need to clean the wound, apply local anti-inflammatory drugs, usually pay attention to vulvar cleanliness, regular cleaning and dressing change, you can also apply infrared irradiation perineum, to promote the wound blood circulation to assist in the healing process. If the wound is deeper, but not infected, and the wound is relatively fresh, you can do a second suture. In some cases, there is a rejection reaction due to non-absorption of absorbable sutures, which causes the incision to split, exposing the absorbable sutures. The side incision will heal naturally after the patient goes to the hospital to have the sutures removed. Regardless of the cause of the split side incision wound, the mother should usually keep the vulva clean. As the perineal tissues are rich in blood flow, their healing ability is strong, so there is no need to worry too much.