There is no particularly good means of checking whether the pelvis has recovered and whether it has closed completely after delivery. Mothers can judge whether the pelvis has recovered through their own symptoms, especially in the late stage of pregnancy and after delivery, many patients may show separation of the pubic symphysis, as the pelvis is close to delivery, in order to ensure that the pelvis is enlarged as much as possible, in order to facilitate the smooth delivery of the fetus, the ligaments will be more lax, which will lead to the separation of the pelvis, especially the pubic symphysis, and many patients will show severe pain in the pubic area, especially when getting up or changing other positions. This separation of the pubic symphysis is often characterized by severe pain in the pubic region, which is especially severe when the patient gets up or changes position. However, with the prolongation of time after delivery, many people’s pain can disappear on their own, and when such discomfort disappears completely, it can be initially judged that the pelvis has basically closed.