Second-degree tear is better than lateral cut because second-degree tear is a laceration that includes skin and mucous membrane without damaging the muscle layer, the damage is more mild and bleeding is less, usually one layer can be sutured and it can heal well. Lateral cut is a larger wound compared with second-degree tear, the muscle layer needs to be cut, the suture has to be divided into three layers, and the operation time is longer and the bleeding is more frequent. There are also more chances of redness, swelling and pain in the wound after surgery, and some people have non-absorbable medicated threads, which make the wound swollen and painful, and very painful. Second-degree tearing is less damaging than side-cutting, faster recovery, fewer cases of non-absorption of medicinal threads, mild symptoms, easy to deal with, and in the process of delivery, the doctor can choose the side-cutting according to the size of the fetus and the characteristics of the perineum, and try to protect the perineum and choose the side-cutting cautiously, which is also considered to be a very good protection for the mothers.