The anal swelling and pain after the lateral incision of the normal birth should pay attention to hygiene, cleaning, keep the local dry, clean, to avoid the occurrence of inflammatory infection. You can use a 1:5000 potassium permanganate bath, which has an anti-inflammatory effect and can also reduce the local tissue edema that causes swelling and pain. You should also pay attention to a light diet and eat fresh vegetables in moderation to help promote bowel movements and prevent constipation. In the second trimester of pregnancy, the fetus grows and presses on the rectum, causing constipation, and the lack of bowel movement causes hemorrhoids, which can lead to anal swelling and pain, and can be relieved by taking a sitz bath. If the condition is serious and the pain and swelling is obvious, you can take antibiotics in moderation.