There is no way to judge whether a parity tear of three layers is serious or not, it needs to be differentiated according to the degree, generally 1-2 degrees is not serious; 3-4 degrees is considered more serious. 1-2 degrees is considered a mild tear, usually less bleeding, the wound is also small, some cases do not need further treatment or only need a simple suture, while healing is also good. If it is a 3-4 degree tear, then it needs to be carefully maintained and needs to be stitched up by a specialized doctor, and also requires intensive care after the surgery. In general, during labor, the doctor or midwife will assess the condition of the perineum. When the condition is not good and the mother is at risk of a large perineal tear, an episiotomy will be chosen to widen the birth canal and help the fetus to be delivered smoothly to avoid a severe tear.