Episiotomy includes not only lateral incisions, but also central incisions (for convenience of description, hereafter collectively referred to as lateral incisions). Some mothers who have had a cesarean section choose surgical delivery for the simple reason of avoiding side incisions. Is side incision really that scary? Do all mothers who have natural births have to go through this level? In order to solve this problem, we collected relevant information from abroad and compared it with the domestic situation: episiotomy has a limited scope of application abroad and domestically. As a routine operation in the process of natural delivery, the proportion of vaginal delivery in foreign countries is relatively low.