After giving birth to a baby, it is very common for women to experience bone pain in the pubic bone and perineum area, leading to bone pain for the following reasons: 1, because the uterus increases significantly during pregnancy, the uterus to the pubic bone and pelvic floor are compressed, and after giving birth to a baby, the compression relief will lead to bone joint ligaments reflex oedema, and in the first few days after giving birth to a baby the pain symptom is more pronounced. 2, after giving birth to a baby, the female After giving birth to a baby, the hormone level in the body will change significantly, which will lead to the relaxation of the ligaments of the pelvic floor, which is also the reason for the pain.3, excessive exertion during labor and delivery, excessive expansion of the pelvis and so on are also the reasons for the post-partum bone pain.