Hematoma in the perineum after a normal delivery is mainly caused by injury or rupture of blood vessels in the birth canal, resulting in localized blood stasis. A normal delivery is a type of labor in which the fetus is delivered naturally through the vagina. If the head circumference of the fetus is large, it may compress the surrounding tissues during vaginal delivery, and the local blood vessels will rupture and bleed, which will easily cause tissue fluid and blood stagnation in the perineum, and when the skin or mucous membranes are relatively intact, post-partum perineal hematoma will occur. For women with perineal hematoma, they should keep the local area clean to avoid causing infection. Sitz baths with potassium permanganate can be used during this period to promote recovery. If the hematoma is large and the symptoms are serious and the organism cannot absorb it by itself, surgical incision should be chosen. Hematoma in perineum after normal delivery is one of the complications of normal delivery, so it is recommended to pay more attention to it and choose the appropriate treatment according to individual situation.